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The Journal of Family Practice is a peer-reviewed and indexed journal that provides its 95,000 family physician readers with timely, practical, and evidence-based information that they can immediately put into practice. Research and applied evidence articles, plus patient-oriented departments like Practice Alert, PURLs, and Clinical Inquiries can be found in print and at jfponline.com. The Web site, which logs an average of 125,000 visitors every month, also offers audiocasts by physician specialists and interactive features like Instant Polls and Photo Rounds Friday—a weekly diagnostic puzzle.
gambling
compulsive behaviors
ammunition
assault rifle
black jack
Boko Haram
bondage
child abuse
cocaine
Daech
drug paraphernalia
explosion
gun
human trafficking
ISIL
ISIS
Islamic caliphate
Islamic state
mixed martial arts
MMA
molestation
national rifle association
NRA
nsfw
pedophile
pedophilia
poker
porn
pornography
psychedelic drug
recreational drug
sex slave rings
slot machine
terrorism
terrorist
Texas hold 'em
UFC
substance abuse
abuseed
abuseer
abusees
abuseing
abusely
abuses
aeolus
aeolused
aeoluser
aeoluses
aeolusing
aeolusly
aeoluss
ahole
aholeed
aholeer
aholees
aholeing
aholely
aholes
alcohol
alcoholed
alcoholer
alcoholes
alcoholing
alcoholly
alcohols
allman
allmaned
allmaner
allmanes
allmaning
allmanly
allmans
alted
altes
alting
altly
alts
analed
analer
anales
analing
anally
analprobe
analprobeed
analprobeer
analprobees
analprobeing
analprobely
analprobes
anals
anilingus
anilingused
anilinguser
anilinguses
anilingusing
anilingusly
anilinguss
anus
anused
anuser
anuses
anusing
anusly
anuss
areola
areolaed
areolaer
areolaes
areolaing
areolaly
areolas
areole
areoleed
areoleer
areolees
areoleing
areolely
areoles
arian
arianed
arianer
arianes
arianing
arianly
arians
aryan
aryaned
aryaner
aryanes
aryaning
aryanly
aryans
asiaed
asiaer
asiaes
asiaing
asialy
asias
ass
ass hole
ass lick
ass licked
ass licker
ass lickes
ass licking
ass lickly
ass licks
assbang
assbanged
assbangeded
assbangeder
assbangedes
assbangeding
assbangedly
assbangeds
assbanger
assbanges
assbanging
assbangly
assbangs
assbangsed
assbangser
assbangses
assbangsing
assbangsly
assbangss
assed
asser
asses
assesed
asseser
asseses
assesing
assesly
assess
assfuck
assfucked
assfucker
assfuckered
assfuckerer
assfuckeres
assfuckering
assfuckerly
assfuckers
assfuckes
assfucking
assfuckly
assfucks
asshat
asshated
asshater
asshates
asshating
asshatly
asshats
assholeed
assholeer
assholees
assholeing
assholely
assholes
assholesed
assholeser
assholeses
assholesing
assholesly
assholess
assing
assly
assmaster
assmastered
assmasterer
assmasteres
assmastering
assmasterly
assmasters
assmunch
assmunched
assmuncher
assmunches
assmunching
assmunchly
assmunchs
asss
asswipe
asswipeed
asswipeer
asswipees
asswipeing
asswipely
asswipes
asswipesed
asswipeser
asswipeses
asswipesing
asswipesly
asswipess
azz
azzed
azzer
azzes
azzing
azzly
azzs
babeed
babeer
babees
babeing
babely
babes
babesed
babeser
babeses
babesing
babesly
babess
ballsac
ballsaced
ballsacer
ballsaces
ballsacing
ballsack
ballsacked
ballsacker
ballsackes
ballsacking
ballsackly
ballsacks
ballsacly
ballsacs
ballsed
ballser
ballses
ballsing
ballsly
ballss
barf
barfed
barfer
barfes
barfing
barfly
barfs
bastard
bastarded
bastarder
bastardes
bastarding
bastardly
bastards
bastardsed
bastardser
bastardses
bastardsing
bastardsly
bastardss
bawdy
bawdyed
bawdyer
bawdyes
bawdying
bawdyly
bawdys
beaner
beanered
beanerer
beaneres
beanering
beanerly
beaners
beardedclam
beardedclamed
beardedclamer
beardedclames
beardedclaming
beardedclamly
beardedclams
beastiality
beastialityed
beastialityer
beastialityes
beastialitying
beastialityly
beastialitys
beatch
beatched
beatcher
beatches
beatching
beatchly
beatchs
beater
beatered
beaterer
beateres
beatering
beaterly
beaters
beered
beerer
beeres
beering
beerly
beeyotch
beeyotched
beeyotcher
beeyotches
beeyotching
beeyotchly
beeyotchs
beotch
beotched
beotcher
beotches
beotching
beotchly
beotchs
biatch
biatched
biatcher
biatches
biatching
biatchly
biatchs
big tits
big titsed
big titser
big titses
big titsing
big titsly
big titss
bigtits
bigtitsed
bigtitser
bigtitses
bigtitsing
bigtitsly
bigtitss
bimbo
bimboed
bimboer
bimboes
bimboing
bimboly
bimbos
bisexualed
bisexualer
bisexuales
bisexualing
bisexually
bisexuals
bitch
bitched
bitcheded
bitcheder
bitchedes
bitcheding
bitchedly
bitcheds
bitcher
bitches
bitchesed
bitcheser
bitcheses
bitchesing
bitchesly
bitchess
bitching
bitchly
bitchs
bitchy
bitchyed
bitchyer
bitchyes
bitchying
bitchyly
bitchys
bleached
bleacher
bleaches
bleaching
bleachly
bleachs
blow job
blow jobed
blow jober
blow jobes
blow jobing
blow jobly
blow jobs
blowed
blower
blowes
blowing
blowjob
blowjobed
blowjober
blowjobes
blowjobing
blowjobly
blowjobs
blowjobsed
blowjobser
blowjobses
blowjobsing
blowjobsly
blowjobss
blowly
blows
boink
boinked
boinker
boinkes
boinking
boinkly
boinks
bollock
bollocked
bollocker
bollockes
bollocking
bollockly
bollocks
bollocksed
bollockser
bollockses
bollocksing
bollocksly
bollockss
bollok
bolloked
bolloker
bollokes
bolloking
bollokly
bolloks
boner
bonered
bonerer
boneres
bonering
bonerly
boners
bonersed
bonerser
bonerses
bonersing
bonersly
bonerss
bong
bonged
bonger
bonges
bonging
bongly
bongs
boob
boobed
boober
boobes
boobies
boobiesed
boobieser
boobieses
boobiesing
boobiesly
boobiess
boobing
boobly
boobs
boobsed
boobser
boobses
boobsing
boobsly
boobss
booby
boobyed
boobyer
boobyes
boobying
boobyly
boobys
booger
boogered
boogerer
boogeres
boogering
boogerly
boogers
bookie
bookieed
bookieer
bookiees
bookieing
bookiely
bookies
bootee
booteeed
booteeer
booteees
booteeing
booteely
bootees
bootie
bootieed
bootieer
bootiees
bootieing
bootiely
booties
booty
bootyed
bootyer
bootyes
bootying
bootyly
bootys
boozeed
boozeer
boozees
boozeing
boozely
boozer
boozered
boozerer
boozeres
boozering
boozerly
boozers
boozes
boozy
boozyed
boozyer
boozyes
boozying
boozyly
boozys
bosomed
bosomer
bosomes
bosoming
bosomly
bosoms
bosomy
bosomyed
bosomyer
bosomyes
bosomying
bosomyly
bosomys
bugger
buggered
buggerer
buggeres
buggering
buggerly
buggers
bukkake
bukkakeed
bukkakeer
bukkakees
bukkakeing
bukkakely
bukkakes
bull shit
bull shited
bull shiter
bull shites
bull shiting
bull shitly
bull shits
bullshit
bullshited
bullshiter
bullshites
bullshiting
bullshitly
bullshits
bullshitsed
bullshitser
bullshitses
bullshitsing
bullshitsly
bullshitss
bullshitted
bullshitteded
bullshitteder
bullshittedes
bullshitteding
bullshittedly
bullshitteds
bullturds
bullturdsed
bullturdser
bullturdses
bullturdsing
bullturdsly
bullturdss
bung
bunged
bunger
bunges
bunging
bungly
bungs
busty
bustyed
bustyer
bustyes
bustying
bustyly
bustys
butt
butt fuck
butt fucked
butt fucker
butt fuckes
butt fucking
butt fuckly
butt fucks
butted
buttes
buttfuck
buttfucked
buttfucker
buttfuckered
buttfuckerer
buttfuckeres
buttfuckering
buttfuckerly
buttfuckers
buttfuckes
buttfucking
buttfuckly
buttfucks
butting
buttly
buttplug
buttpluged
buttpluger
buttpluges
buttpluging
buttplugly
buttplugs
butts
caca
cacaed
cacaer
cacaes
cacaing
cacaly
cacas
cahone
cahoneed
cahoneer
cahonees
cahoneing
cahonely
cahones
cameltoe
cameltoeed
cameltoeer
cameltoees
cameltoeing
cameltoely
cameltoes
carpetmuncher
carpetmunchered
carpetmuncherer
carpetmuncheres
carpetmunchering
carpetmuncherly
carpetmunchers
cawk
cawked
cawker
cawkes
cawking
cawkly
cawks
chinc
chinced
chincer
chinces
chincing
chincly
chincs
chincsed
chincser
chincses
chincsing
chincsly
chincss
chink
chinked
chinker
chinkes
chinking
chinkly
chinks
chode
chodeed
chodeer
chodees
chodeing
chodely
chodes
chodesed
chodeser
chodeses
chodesing
chodesly
chodess
clit
clited
cliter
clites
cliting
clitly
clitoris
clitorised
clitoriser
clitorises
clitorising
clitorisly
clitoriss
clitorus
clitorused
clitoruser
clitoruses
clitorusing
clitorusly
clitoruss
clits
clitsed
clitser
clitses
clitsing
clitsly
clitss
clitty
clittyed
clittyer
clittyes
clittying
clittyly
clittys
cocain
cocaine
cocained
cocaineed
cocaineer
cocainees
cocaineing
cocainely
cocainer
cocaines
cocaining
cocainly
cocains
cock
cock sucker
cock suckered
cock suckerer
cock suckeres
cock suckering
cock suckerly
cock suckers
cockblock
cockblocked
cockblocker
cockblockes
cockblocking
cockblockly
cockblocks
cocked
cocker
cockes
cockholster
cockholstered
cockholsterer
cockholsteres
cockholstering
cockholsterly
cockholsters
cocking
cockknocker
cockknockered
cockknockerer
cockknockeres
cockknockering
cockknockerly
cockknockers
cockly
cocks
cocksed
cockser
cockses
cocksing
cocksly
cocksmoker
cocksmokered
cocksmokerer
cocksmokeres
cocksmokering
cocksmokerly
cocksmokers
cockss
cocksucker
cocksuckered
cocksuckerer
cocksuckeres
cocksuckering
cocksuckerly
cocksuckers
coital
coitaled
coitaler
coitales
coitaling
coitally
coitals
commie
commieed
commieer
commiees
commieing
commiely
commies
condomed
condomer
condomes
condoming
condomly
condoms
coon
cooned
cooner
coones
cooning
coonly
coons
coonsed
coonser
coonses
coonsing
coonsly
coonss
corksucker
corksuckered
corksuckerer
corksuckeres
corksuckering
corksuckerly
corksuckers
cracked
crackwhore
crackwhoreed
crackwhoreer
crackwhorees
crackwhoreing
crackwhorely
crackwhores
crap
craped
craper
crapes
craping
craply
crappy
crappyed
crappyer
crappyes
crappying
crappyly
crappys
cum
cumed
cumer
cumes
cuming
cumly
cummin
cummined
cumminer
cummines
cumming
cumminged
cumminger
cumminges
cumminging
cummingly
cummings
cummining
cumminly
cummins
cums
cumshot
cumshoted
cumshoter
cumshotes
cumshoting
cumshotly
cumshots
cumshotsed
cumshotser
cumshotses
cumshotsing
cumshotsly
cumshotss
cumslut
cumsluted
cumsluter
cumslutes
cumsluting
cumslutly
cumsluts
cumstain
cumstained
cumstainer
cumstaines
cumstaining
cumstainly
cumstains
cunilingus
cunilingused
cunilinguser
cunilinguses
cunilingusing
cunilingusly
cunilinguss
cunnilingus
cunnilingused
cunnilinguser
cunnilinguses
cunnilingusing
cunnilingusly
cunnilinguss
cunny
cunnyed
cunnyer
cunnyes
cunnying
cunnyly
cunnys
cunt
cunted
cunter
cuntes
cuntface
cuntfaceed
cuntfaceer
cuntfacees
cuntfaceing
cuntfacely
cuntfaces
cunthunter
cunthuntered
cunthunterer
cunthunteres
cunthuntering
cunthunterly
cunthunters
cunting
cuntlick
cuntlicked
cuntlicker
cuntlickered
cuntlickerer
cuntlickeres
cuntlickering
cuntlickerly
cuntlickers
cuntlickes
cuntlicking
cuntlickly
cuntlicks
cuntly
cunts
cuntsed
cuntser
cuntses
cuntsing
cuntsly
cuntss
dago
dagoed
dagoer
dagoes
dagoing
dagoly
dagos
dagosed
dagoser
dagoses
dagosing
dagosly
dagoss
dammit
dammited
dammiter
dammites
dammiting
dammitly
dammits
damn
damned
damneded
damneder
damnedes
damneding
damnedly
damneds
damner
damnes
damning
damnit
damnited
damniter
damnites
damniting
damnitly
damnits
damnly
damns
dick
dickbag
dickbaged
dickbager
dickbages
dickbaging
dickbagly
dickbags
dickdipper
dickdippered
dickdipperer
dickdipperes
dickdippering
dickdipperly
dickdippers
dicked
dicker
dickes
dickface
dickfaceed
dickfaceer
dickfacees
dickfaceing
dickfacely
dickfaces
dickflipper
dickflippered
dickflipperer
dickflipperes
dickflippering
dickflipperly
dickflippers
dickhead
dickheaded
dickheader
dickheades
dickheading
dickheadly
dickheads
dickheadsed
dickheadser
dickheadses
dickheadsing
dickheadsly
dickheadss
dicking
dickish
dickished
dickisher
dickishes
dickishing
dickishly
dickishs
dickly
dickripper
dickrippered
dickripperer
dickripperes
dickrippering
dickripperly
dickrippers
dicks
dicksipper
dicksippered
dicksipperer
dicksipperes
dicksippering
dicksipperly
dicksippers
dickweed
dickweeded
dickweeder
dickweedes
dickweeding
dickweedly
dickweeds
dickwhipper
dickwhippered
dickwhipperer
dickwhipperes
dickwhippering
dickwhipperly
dickwhippers
dickzipper
dickzippered
dickzipperer
dickzipperes
dickzippering
dickzipperly
dickzippers
diddle
diddleed
diddleer
diddlees
diddleing
diddlely
diddles
dike
dikeed
dikeer
dikees
dikeing
dikely
dikes
dildo
dildoed
dildoer
dildoes
dildoing
dildoly
dildos
dildosed
dildoser
dildoses
dildosing
dildosly
dildoss
diligaf
diligafed
diligafer
diligafes
diligafing
diligafly
diligafs
dillweed
dillweeded
dillweeder
dillweedes
dillweeding
dillweedly
dillweeds
dimwit
dimwited
dimwiter
dimwites
dimwiting
dimwitly
dimwits
dingle
dingleed
dingleer
dinglees
dingleing
dinglely
dingles
dipship
dipshiped
dipshiper
dipshipes
dipshiping
dipshiply
dipships
dizzyed
dizzyer
dizzyes
dizzying
dizzyly
dizzys
doggiestyleed
doggiestyleer
doggiestylees
doggiestyleing
doggiestylely
doggiestyles
doggystyleed
doggystyleer
doggystylees
doggystyleing
doggystylely
doggystyles
dong
donged
donger
donges
donging
dongly
dongs
doofus
doofused
doofuser
doofuses
doofusing
doofusly
doofuss
doosh
dooshed
doosher
dooshes
dooshing
dooshly
dooshs
dopeyed
dopeyer
dopeyes
dopeying
dopeyly
dopeys
douchebag
douchebaged
douchebager
douchebages
douchebaging
douchebagly
douchebags
douchebagsed
douchebagser
douchebagses
douchebagsing
douchebagsly
douchebagss
doucheed
doucheer
douchees
doucheing
douchely
douches
douchey
doucheyed
doucheyer
doucheyes
doucheying
doucheyly
doucheys
drunk
drunked
drunker
drunkes
drunking
drunkly
drunks
dumass
dumassed
dumasser
dumasses
dumassing
dumassly
dumasss
dumbass
dumbassed
dumbasser
dumbasses
dumbassesed
dumbasseser
dumbasseses
dumbassesing
dumbassesly
dumbassess
dumbassing
dumbassly
dumbasss
dummy
dummyed
dummyer
dummyes
dummying
dummyly
dummys
dyke
dykeed
dykeer
dykees
dykeing
dykely
dykes
dykesed
dykeser
dykeses
dykesing
dykesly
dykess
erotic
eroticed
eroticer
erotices
eroticing
eroticly
erotics
extacy
extacyed
extacyer
extacyes
extacying
extacyly
extacys
extasy
extasyed
extasyer
extasyes
extasying
extasyly
extasys
fack
facked
facker
fackes
facking
fackly
facks
fag
faged
fager
fages
fagg
fagged
faggeded
faggeder
faggedes
faggeding
faggedly
faggeds
fagger
fagges
fagging
faggit
faggited
faggiter
faggites
faggiting
faggitly
faggits
faggly
faggot
faggoted
faggoter
faggotes
faggoting
faggotly
faggots
faggs
faging
fagly
fagot
fagoted
fagoter
fagotes
fagoting
fagotly
fagots
fags
fagsed
fagser
fagses
fagsing
fagsly
fagss
faig
faiged
faiger
faiges
faiging
faigly
faigs
faigt
faigted
faigter
faigtes
faigting
faigtly
faigts
fannybandit
fannybandited
fannybanditer
fannybandites
fannybanditing
fannybanditly
fannybandits
farted
farter
fartes
farting
fartknocker
fartknockered
fartknockerer
fartknockeres
fartknockering
fartknockerly
fartknockers
fartly
farts
felch
felched
felcher
felchered
felcherer
felcheres
felchering
felcherly
felchers
felches
felching
felchinged
felchinger
felchinges
felchinging
felchingly
felchings
felchly
felchs
fellate
fellateed
fellateer
fellatees
fellateing
fellately
fellates
fellatio
fellatioed
fellatioer
fellatioes
fellatioing
fellatioly
fellatios
feltch
feltched
feltcher
feltchered
feltcherer
feltcheres
feltchering
feltcherly
feltchers
feltches
feltching
feltchly
feltchs
feom
feomed
feomer
feomes
feoming
feomly
feoms
fisted
fisteded
fisteder
fistedes
fisteding
fistedly
fisteds
fisting
fistinged
fistinger
fistinges
fistinging
fistingly
fistings
fisty
fistyed
fistyer
fistyes
fistying
fistyly
fistys
floozy
floozyed
floozyer
floozyes
floozying
floozyly
floozys
foad
foaded
foader
foades
foading
foadly
foads
fondleed
fondleer
fondlees
fondleing
fondlely
fondles
foobar
foobared
foobarer
foobares
foobaring
foobarly
foobars
freex
freexed
freexer
freexes
freexing
freexly
freexs
frigg
frigga
friggaed
friggaer
friggaes
friggaing
friggaly
friggas
frigged
frigger
frigges
frigging
friggly
friggs
fubar
fubared
fubarer
fubares
fubaring
fubarly
fubars
fuck
fuckass
fuckassed
fuckasser
fuckasses
fuckassing
fuckassly
fuckasss
fucked
fuckeded
fuckeder
fuckedes
fuckeding
fuckedly
fuckeds
fucker
fuckered
fuckerer
fuckeres
fuckering
fuckerly
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When worry is excessive: Easing the burden of GAD
THE CASE
Sandra H,* a 24-year-old single woman with a history of asthma, presented to our family medicine clinic as a new patient. Ms. H said she lived at home with her mother. She completed high school but never attended college due to anxiety. She had held several jobs since high school and recently decided to apply to a local college, which prompted a desire to gain control over the anxiety that had been present since middle school. She reported feeling anxious, having difficulty breathing, shaking all over, having difficulty concentrating, and experiencing numbness and tingling in her fingers. She was often irritable at home, which she attributed partly to anxiety but mostly to disrupted sleep. We administered the 7-question Generalized Anxiety Disorder (GAD-7) questionnaire and she scored 15 (of a possible 21) points, indicative of severe anxiety.
●
* The patient’s name has been changed to protect her identity.
Approximately 1 in 5 patients presenting to primary care clinics have at least 1 anxiety disorder and 7.6% have generalized anxiety disorder (GAD).1 Yet many go untreated. The lifetime prevalence of GAD is 3.7% worldwide and 7.8% in the United States.2 Only 5% of cases emerge by age 13,2 but incidence increases through adolescence and young adulthood, with a quarter of all cases occurring by age 25.2 GAD occurs about twice as often in women as it does in men. It is typically recurrent, and many patients require ongoing treatment.2
GAD diagnostic criteria and differential considerations
Diagnosis of GAD requires at least 6 months of excessive worry or anxiety about a variety of circumstances, occurring on most days and for more than half the day.3 The worry or anxiety in GAD is difficult to control, disrupts meaningful areas of life, and surrounds everyday concerns, such as finances, health, or family-related issues. Among adolescents with GAD, worries typically include school performance and may often present as perfectionism.4 At least 3 of the following 6 symptoms result from chronic anxiety: restlessness, fatigue, poor concentration, irritability, muscle tension, and sleep disturbance.2
Rule out other conditions. Make sure symptoms of GAD are not better explained by another medical problem, including other mental disorders or substance use disorders.3 Complaints of anxiety in the context of mania, hypomania, or withdrawal from alcohol or a sedative hypnotic suggest a different underlying cause, thereby requiring a complete history with symptom chronology and collateral information. The pattern of anxiety seen in GAD also differs from the focused sources of anxiety found in disorders such as social anxiety disorder (SAD) and post-traumatic stress disorder. For example, SAD might center on embarrassment in a social setting rather than reflect a pattern of general worry.5
Consider comorbidities. Further complicating diagnosis and treatment, GAD has been linked to higher rates of comorbidity and higher health care utilization. About 90% of GAD patients experience psychiatric comorbidity, with major depressive disorder co-occurring about 60% of the time.6 Substance use disorders co-occur with GAD more than 20% of the time.2 Despite comorbidities, it is the somatic complaints in GAD that often drive patient requests for medical care.7,8 GAD itself is an independent predictor of heart disease9 and is linked to increased risk of chronic or severe headaches10 and suicide.11,12
Continue to: Work with patients and family toward a diagnosis
Work with patients and family toward a diagnosis
Despite the potential benefits of early identification and treatment of GAD,13 the average elapsed time from symptom onset to initial medication treatment is 7 years.14 Multiple factors likely account for this delay. Clinical presentations can be highly variable,6 with 1 patient presenting primarily with sleep complaints and another with gastrointestinal symptoms. Some medical conditions (TABLE 1)15 and substances (TABLE 2)16-18 can cause secondary anxiety symptoms, and their presence should prompt a thorough evaluation.
Address the mind-body connection. Because uncertainty and ambiguity surrounding a diagnosis often drive worry,19 anxious patients or their family members commonly seek additional medical visits and tests in search of answers. In such instances, it helps to explain the physiologic connection between somatic complaints and anxiety.8 Describe how areas of the brain that manage fear and stress can also cause muscle tension, gastrointestinal complaints, hyperarousal, or sleep disturbance.
Empathy and early psychoeducation on the reason anxiety is being considered can decrease stigma and enable appropriate follow-up and treatment. You might introduce the connection between health complaints and GAD specifically by exploring the amount of worry surrounding the presenting symptoms, followed by a question such as, “Sometimes your worry will fit the situation and sometimes it’ll be too much. Has anyone ever told you that you worry too much?” The patient’s response to such a question could signal a need to use the GAD-7 screening tool1 as an aid to diagnosis and as a baseline measure for monitoring subsequent treatment progress.
Psycho- and pharmacotherapy aspects of management
Let patients choose from among various coping strategies. Be prepared to offer patients user-friendly handouts, reading material, or links to educational Web sites. Many patients are interested in using smartphone applications to learn and practice coping strategies. Although these apps can encourage the regular practice of coping skills, caution teens and parents about privacy issues and the lack of evidence supporting this approach as stand-alone therapy.21 Offering several choices (TABLE 4)
Continue to: For patients who remain focused...
For patients who remain focused on somatic complaints and resist adopting coping skills or treatment, pushing certain recommendations can actually increase resistance to proper treatment.22 Instead, explore their ambivalence, offer facts, express concern about the current course of the illness, and emphasize the need to revisit the discussion at a future appointment. Offer follow-up monitoring to assess the course of the illness and readiness for GAD treatment.
Initiate treatment in a stepwise manner13 for the patient who is ready for GAD treatment. This approach includes education and monitoring; low-intensity interventions (eg, treatment workbooks or group sessions); medication and/or referral for psychotherapy; referral for outpatient psychiatric care; and hospitalization for patients who pose a danger to self or others.13 Studies suggest that patients receiving both psychotherapy and pharmacotherapy benefit from the complementary targeting of symptoms, exhibit increased adherence, and report fewer adverse effects.23
Patients are most likely to benefit from therapy when they have the capacity for introspection and forming friendships (ie, can form a therapeutic alliance). With such patients who have mild or moderate symptoms of GAD, offer cognitive behavioral therapy (CBT) or applied relaxation training. Consider a trial of medication when symptoms are severe, when psychotherapy is not a good option, or when response to psychotherapy is inadequate.13 Medications work by targeting primitive parts of the brain such as the amygdala (bottom up), while psychotherapy targets the cortex or more evolved part of the brain, teaching it to modulate the lower or more primitive structures (top down).24
Medication considerations. Selective serotonin reuptake inhibitors (SSRIs) are considered first-line pharmacotherapy for adult and adolescent patients with GAD.20 However, in adolescents, no SSRIs are approved by the US Food and Drug Administration (FDA) to treat anxiety disorders unassociated with obsessive-compulsive disorder. Use caution if prescribing an SSRI for off-label treatment in an adolescent; talk with the patient and family about the FDA’s black-box warning regarding the potential for suicidality in adolescents.
For adults, selective norepinephrine reuptake inhibitors (SNRIs) are also considered a first-line treatment option.23 SSRIs and SNRIs are well-studied, effective, safe, and better tolerated than earlier antidepressants. However, be aware that both SSRIs and SNRIs are often associated with headache, nausea, and sexual dysfunction. They are dosed once daily and have not been shown to cause dependence. Inform patients that onset of action is often delayed 4 to 8 weeks23 and that there is a risk for anxiety-producing effects early in treatment. To minimize these effects, consider starting treatment at a lower dose and titrate upward more gradually than when treating depression.
Continue to: Continue treatment for 12 months...
Continue treatment for 12 months to reduce the risk of recurrence.23 If response to treatment is insufficient after 2 adequate trials of an SSRI or SNRI, consider second-line agents such as azapirones or benzodiazepines for adults, keeping in mind the risk for dependence with benzodiazepines.13
Evidence supports GABAergic drugs such as gabapentin and pregabalin as off-label treatments for GAD in refractory adult cases.25 In the European Union, pregabalin is approved for use in GAD. Caution is recommended with both drugs due to abuse potential. Next steps for an inadequate response should include referral to Psychiatry or for inpatient care when risk of harm to self or others is high.
CASE
Considering Ms. H’s ability to work and complete daily activities, we talked to her about CBT as a first step and referred her to a therapist in the community. One month after her initial visit with us, Ms. H returned for a follow-up visit and scored a 17 on her GAD-7, still in the severe range. After one CBT session, she had cancelled her second and third appointments due to work conflicts. She had missed some work from oversleeping after worried sleepless nights. Her worries concerned friendships, paying bills, physical appearance, not being able to exercise and therefore gaining weight, and troubles at work and with her mother. She also described several episodes of nightmares after breaking up with a boyfriend.
She agreed to try an SSRI, and we started her on fluoxetine 10 mg/d. We counseled her on SSRI risks and benefits, including the potential for increased suicidal ideation and how to respond if such thoughts developed. Three weeks after starting fluoxetine, Ms. H reported improvement with no adverse effects from the medication, except for decreased appetite and some weight loss, which she welcomed. She had registered for college courses, and her third score on the GAD-7 was an 8.
We increased her fluoxetine dose to 20 mg/d for maintenance. We encouraged her to return to her therapist for CBT and she scheduled that appointment. Therapy records noted a GAD-7 score of 5 at follow-up 8 weeks later. Ms. H reported improved sleep, reduced irritability at home, and better relationships with her mother and friends. She had begun college classes and was writing about her thoughts and worries as part of her CBT homework. She continued follow-up appointments with both her family physician and her therapist.
CORRESPONDENCE
Christopher A. Ebberwein, PhD, Wesley Family Medicine Residency, 850 North Hillside, Wichita, KS 67214; chris. ebberwein@wesleymc.com.
1. Kroenke K, Spitzer RL, Williams JBW, et al. Anxiety disorders in primary care: prevalence, impairment, comorbidity, and detection. Ann Intern Med. 2007;146:317-325.
2. Ruscio AM, Hallion LS, Lim CCW, et al. Cross-sectional comparison of the epidemiology of DSM-5 generalized anxiety disorder across the globe. JAMA Psychiatry. 2017;74:465-475.
3. American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5). Washington, DC: American Psychiatric Publishing; 2013.
4. Fernandez S. Anxiety disorders in childhood and adolescence: a primary care approach. Pediatr Ann. 2017;46:e213-e216.
5. Connolly SD, Bernstein GA. Practice parameter for the assessment and treatment of children and adolescents with anxiety disorders. J Am Acad Child Adolesc Psychiatry. 2007;46:267-283.
6. Reinhold JA, Rickels K. Pharmacological treatments for generalized anxiety disorder in adults: an update. Expert Opin Pharmacother. 2015;16:1669-1681.
7. Kujanpää TS, Jokelainen J, Auvinen JP, et al. The association of generalized anxiety disorder and somatic symptoms with frequent attendance to healthcare services: a cross-sectional study from the Northern Finland Birth Cohort 1966. Int J Psychiatry Med. 2017:52:147-159.
8. Ramsawh HJ, Chavira DA, Stein MB. Burden of anxiety disorders in pediatric medical settings: prevalence, phenomenology, and a research agenda. Arch Pediatr Adolesc Med. 2010;164:965-972. doi:10.1001/archpediatrics.2010.170.
9. Barger SD, Sydeman SJ. Does generalized anxiety disorder predict coronary heart disease risk factors independently of major depressive disorder? J Affect Disord. 2005;88:87-91.
10. Bruffaerts R, Demyttenaere K, Kessler RC, et al. The associations between preexisting mental disorders and subsequent onset of chronic headaches: a worldwide epidemiologic perspective. J Pain. 2015;16:42-52.
11. Husky MM, Olfson M, He J, et al. Twelve-month suicidal symptoms and use of services among adolescents: results from the National Comorbidity Survey. Psychiatr Serv. 2012;63:989-996.
12. Nepon J, Belik S, Bolton J, et al. The relationship between anxiety disorders and suicide attempts: findings from the National Epidemiologic Survey on Alcohol and Related Conditions. Depress Anxiety. 2010;27:791–798.
13. National Institute for Health and Care Excellence (NICE). Generalised anxiety disorder and panic disorder adults: management. nice.org.uk/guidance/cg113. Accessed August 20, 2020.
14. Dell’Osso B, Camuri G, Benatti B, et al. Differences in latency to first pharmacological treatment (duration of untreated illness) in anxiety disorders: a study on patients with panic disorder, generalized anxiety disorder and obsessive-compulsive disorder. Early Interv Psychiatry. 2013;7:374-380.
15. Hales RE, Yudofsky SC, Roberts LW, eds. Textbook of Psychiatry, 6th ed. Arlington, VA: American Psychiatric Publishing: 2014:391-430.
16. Fernandez F, Levy JK, Lachar BL, et al. The management of depression and anxiety in the elderly. J Clin Psychiatry. 1995;56(suppl 2):20-29.
17. Kirkwood CK, Hayes PE. Anxiety disorders. In: DiPiro JT, Talbert RL, Yee GC, et al, eds. Pharmacotherapy: A Pathophysiologic Approach, 3rd ed. Stamford, Conn: Appleton & Lange;1997:1443-1462.
18. Culpepper L. Generalized anxiety disorder and medical illness. J Clin Psychiatry. 2009;70(suppl 2):20-24.
19. Anderson KG, Dugas MJ, Koerner N, et al. Interpretive style and intolerance of uncertainty in individuals with anxiety disorders: a focus on generalized anxiety disorder. J Anxiety Disord. 2012;26:823-832.
20. Satterfield JM, Feldman MD. Anxiety. In Feldman MD, Christensen JF, Satterfield JM, eds. Behavioral Medicine: A Guide for Clinical Practice. New York: McGraw Hill; 2014:271-282.
21. Grist R, Porter J, Stallard P. Mental health mobile apps for preadolescents and adolescents: A systematic review. J Med Internet Res. 2017;19:e176.
22. Rollnick S, Miller W, Butler C. Motivational Interviewing in Health Care: Helping Patients Change Behavior. 1st ed. New York: The Guilford Press; 2008:34-35.
23. Strawn JR, Geriacioti L, Rajdev N, et al. Pharmacotherapy for generalized anxiety disorder in adult and pediatric patients: an evidence-based review. Expert Opin Pharmacother. 2018;19:1057-1070.
24. Ehmke CJ, Nemeroff CB. Paroxetine. In Schatzberg AF, Nemeroff CB, eds. Textbook of Psychopharmacology, 4th ed. Washington, D.C.: American Psychiatric Publishing, Inc.; 2009:321-352.
25. Huh J, Goebert D, Takeshita J, et al. Treatment of generalized anxiety disorder: a comprehensive review of the literature for psychopharmacologic alternatives to newer antidepressants and benzodiazepines. Prim Care Companion CNS Disord. 2011;13: doi:10.4088/PCC.08r00709blu.
THE CASE
Sandra H,* a 24-year-old single woman with a history of asthma, presented to our family medicine clinic as a new patient. Ms. H said she lived at home with her mother. She completed high school but never attended college due to anxiety. She had held several jobs since high school and recently decided to apply to a local college, which prompted a desire to gain control over the anxiety that had been present since middle school. She reported feeling anxious, having difficulty breathing, shaking all over, having difficulty concentrating, and experiencing numbness and tingling in her fingers. She was often irritable at home, which she attributed partly to anxiety but mostly to disrupted sleep. We administered the 7-question Generalized Anxiety Disorder (GAD-7) questionnaire and she scored 15 (of a possible 21) points, indicative of severe anxiety.
●
* The patient’s name has been changed to protect her identity.
Approximately 1 in 5 patients presenting to primary care clinics have at least 1 anxiety disorder and 7.6% have generalized anxiety disorder (GAD).1 Yet many go untreated. The lifetime prevalence of GAD is 3.7% worldwide and 7.8% in the United States.2 Only 5% of cases emerge by age 13,2 but incidence increases through adolescence and young adulthood, with a quarter of all cases occurring by age 25.2 GAD occurs about twice as often in women as it does in men. It is typically recurrent, and many patients require ongoing treatment.2
GAD diagnostic criteria and differential considerations
Diagnosis of GAD requires at least 6 months of excessive worry or anxiety about a variety of circumstances, occurring on most days and for more than half the day.3 The worry or anxiety in GAD is difficult to control, disrupts meaningful areas of life, and surrounds everyday concerns, such as finances, health, or family-related issues. Among adolescents with GAD, worries typically include school performance and may often present as perfectionism.4 At least 3 of the following 6 symptoms result from chronic anxiety: restlessness, fatigue, poor concentration, irritability, muscle tension, and sleep disturbance.2
Rule out other conditions. Make sure symptoms of GAD are not better explained by another medical problem, including other mental disorders or substance use disorders.3 Complaints of anxiety in the context of mania, hypomania, or withdrawal from alcohol or a sedative hypnotic suggest a different underlying cause, thereby requiring a complete history with symptom chronology and collateral information. The pattern of anxiety seen in GAD also differs from the focused sources of anxiety found in disorders such as social anxiety disorder (SAD) and post-traumatic stress disorder. For example, SAD might center on embarrassment in a social setting rather than reflect a pattern of general worry.5
Consider comorbidities. Further complicating diagnosis and treatment, GAD has been linked to higher rates of comorbidity and higher health care utilization. About 90% of GAD patients experience psychiatric comorbidity, with major depressive disorder co-occurring about 60% of the time.6 Substance use disorders co-occur with GAD more than 20% of the time.2 Despite comorbidities, it is the somatic complaints in GAD that often drive patient requests for medical care.7,8 GAD itself is an independent predictor of heart disease9 and is linked to increased risk of chronic or severe headaches10 and suicide.11,12
Continue to: Work with patients and family toward a diagnosis
Work with patients and family toward a diagnosis
Despite the potential benefits of early identification and treatment of GAD,13 the average elapsed time from symptom onset to initial medication treatment is 7 years.14 Multiple factors likely account for this delay. Clinical presentations can be highly variable,6 with 1 patient presenting primarily with sleep complaints and another with gastrointestinal symptoms. Some medical conditions (TABLE 1)15 and substances (TABLE 2)16-18 can cause secondary anxiety symptoms, and their presence should prompt a thorough evaluation.
Address the mind-body connection. Because uncertainty and ambiguity surrounding a diagnosis often drive worry,19 anxious patients or their family members commonly seek additional medical visits and tests in search of answers. In such instances, it helps to explain the physiologic connection between somatic complaints and anxiety.8 Describe how areas of the brain that manage fear and stress can also cause muscle tension, gastrointestinal complaints, hyperarousal, or sleep disturbance.
Empathy and early psychoeducation on the reason anxiety is being considered can decrease stigma and enable appropriate follow-up and treatment. You might introduce the connection between health complaints and GAD specifically by exploring the amount of worry surrounding the presenting symptoms, followed by a question such as, “Sometimes your worry will fit the situation and sometimes it’ll be too much. Has anyone ever told you that you worry too much?” The patient’s response to such a question could signal a need to use the GAD-7 screening tool1 as an aid to diagnosis and as a baseline measure for monitoring subsequent treatment progress.
Psycho- and pharmacotherapy aspects of management
Let patients choose from among various coping strategies. Be prepared to offer patients user-friendly handouts, reading material, or links to educational Web sites. Many patients are interested in using smartphone applications to learn and practice coping strategies. Although these apps can encourage the regular practice of coping skills, caution teens and parents about privacy issues and the lack of evidence supporting this approach as stand-alone therapy.21 Offering several choices (TABLE 4)
Continue to: For patients who remain focused...
For patients who remain focused on somatic complaints and resist adopting coping skills or treatment, pushing certain recommendations can actually increase resistance to proper treatment.22 Instead, explore their ambivalence, offer facts, express concern about the current course of the illness, and emphasize the need to revisit the discussion at a future appointment. Offer follow-up monitoring to assess the course of the illness and readiness for GAD treatment.
Initiate treatment in a stepwise manner13 for the patient who is ready for GAD treatment. This approach includes education and monitoring; low-intensity interventions (eg, treatment workbooks or group sessions); medication and/or referral for psychotherapy; referral for outpatient psychiatric care; and hospitalization for patients who pose a danger to self or others.13 Studies suggest that patients receiving both psychotherapy and pharmacotherapy benefit from the complementary targeting of symptoms, exhibit increased adherence, and report fewer adverse effects.23
Patients are most likely to benefit from therapy when they have the capacity for introspection and forming friendships (ie, can form a therapeutic alliance). With such patients who have mild or moderate symptoms of GAD, offer cognitive behavioral therapy (CBT) or applied relaxation training. Consider a trial of medication when symptoms are severe, when psychotherapy is not a good option, or when response to psychotherapy is inadequate.13 Medications work by targeting primitive parts of the brain such as the amygdala (bottom up), while psychotherapy targets the cortex or more evolved part of the brain, teaching it to modulate the lower or more primitive structures (top down).24
Medication considerations. Selective serotonin reuptake inhibitors (SSRIs) are considered first-line pharmacotherapy for adult and adolescent patients with GAD.20 However, in adolescents, no SSRIs are approved by the US Food and Drug Administration (FDA) to treat anxiety disorders unassociated with obsessive-compulsive disorder. Use caution if prescribing an SSRI for off-label treatment in an adolescent; talk with the patient and family about the FDA’s black-box warning regarding the potential for suicidality in adolescents.
For adults, selective norepinephrine reuptake inhibitors (SNRIs) are also considered a first-line treatment option.23 SSRIs and SNRIs are well-studied, effective, safe, and better tolerated than earlier antidepressants. However, be aware that both SSRIs and SNRIs are often associated with headache, nausea, and sexual dysfunction. They are dosed once daily and have not been shown to cause dependence. Inform patients that onset of action is often delayed 4 to 8 weeks23 and that there is a risk for anxiety-producing effects early in treatment. To minimize these effects, consider starting treatment at a lower dose and titrate upward more gradually than when treating depression.
Continue to: Continue treatment for 12 months...
Continue treatment for 12 months to reduce the risk of recurrence.23 If response to treatment is insufficient after 2 adequate trials of an SSRI or SNRI, consider second-line agents such as azapirones or benzodiazepines for adults, keeping in mind the risk for dependence with benzodiazepines.13
Evidence supports GABAergic drugs such as gabapentin and pregabalin as off-label treatments for GAD in refractory adult cases.25 In the European Union, pregabalin is approved for use in GAD. Caution is recommended with both drugs due to abuse potential. Next steps for an inadequate response should include referral to Psychiatry or for inpatient care when risk of harm to self or others is high.
CASE
Considering Ms. H’s ability to work and complete daily activities, we talked to her about CBT as a first step and referred her to a therapist in the community. One month after her initial visit with us, Ms. H returned for a follow-up visit and scored a 17 on her GAD-7, still in the severe range. After one CBT session, she had cancelled her second and third appointments due to work conflicts. She had missed some work from oversleeping after worried sleepless nights. Her worries concerned friendships, paying bills, physical appearance, not being able to exercise and therefore gaining weight, and troubles at work and with her mother. She also described several episodes of nightmares after breaking up with a boyfriend.
She agreed to try an SSRI, and we started her on fluoxetine 10 mg/d. We counseled her on SSRI risks and benefits, including the potential for increased suicidal ideation and how to respond if such thoughts developed. Three weeks after starting fluoxetine, Ms. H reported improvement with no adverse effects from the medication, except for decreased appetite and some weight loss, which she welcomed. She had registered for college courses, and her third score on the GAD-7 was an 8.
We increased her fluoxetine dose to 20 mg/d for maintenance. We encouraged her to return to her therapist for CBT and she scheduled that appointment. Therapy records noted a GAD-7 score of 5 at follow-up 8 weeks later. Ms. H reported improved sleep, reduced irritability at home, and better relationships with her mother and friends. She had begun college classes and was writing about her thoughts and worries as part of her CBT homework. She continued follow-up appointments with both her family physician and her therapist.
CORRESPONDENCE
Christopher A. Ebberwein, PhD, Wesley Family Medicine Residency, 850 North Hillside, Wichita, KS 67214; chris. ebberwein@wesleymc.com.
THE CASE
Sandra H,* a 24-year-old single woman with a history of asthma, presented to our family medicine clinic as a new patient. Ms. H said she lived at home with her mother. She completed high school but never attended college due to anxiety. She had held several jobs since high school and recently decided to apply to a local college, which prompted a desire to gain control over the anxiety that had been present since middle school. She reported feeling anxious, having difficulty breathing, shaking all over, having difficulty concentrating, and experiencing numbness and tingling in her fingers. She was often irritable at home, which she attributed partly to anxiety but mostly to disrupted sleep. We administered the 7-question Generalized Anxiety Disorder (GAD-7) questionnaire and she scored 15 (of a possible 21) points, indicative of severe anxiety.
●
* The patient’s name has been changed to protect her identity.
Approximately 1 in 5 patients presenting to primary care clinics have at least 1 anxiety disorder and 7.6% have generalized anxiety disorder (GAD).1 Yet many go untreated. The lifetime prevalence of GAD is 3.7% worldwide and 7.8% in the United States.2 Only 5% of cases emerge by age 13,2 but incidence increases through adolescence and young adulthood, with a quarter of all cases occurring by age 25.2 GAD occurs about twice as often in women as it does in men. It is typically recurrent, and many patients require ongoing treatment.2
GAD diagnostic criteria and differential considerations
Diagnosis of GAD requires at least 6 months of excessive worry or anxiety about a variety of circumstances, occurring on most days and for more than half the day.3 The worry or anxiety in GAD is difficult to control, disrupts meaningful areas of life, and surrounds everyday concerns, such as finances, health, or family-related issues. Among adolescents with GAD, worries typically include school performance and may often present as perfectionism.4 At least 3 of the following 6 symptoms result from chronic anxiety: restlessness, fatigue, poor concentration, irritability, muscle tension, and sleep disturbance.2
Rule out other conditions. Make sure symptoms of GAD are not better explained by another medical problem, including other mental disorders or substance use disorders.3 Complaints of anxiety in the context of mania, hypomania, or withdrawal from alcohol or a sedative hypnotic suggest a different underlying cause, thereby requiring a complete history with symptom chronology and collateral information. The pattern of anxiety seen in GAD also differs from the focused sources of anxiety found in disorders such as social anxiety disorder (SAD) and post-traumatic stress disorder. For example, SAD might center on embarrassment in a social setting rather than reflect a pattern of general worry.5
Consider comorbidities. Further complicating diagnosis and treatment, GAD has been linked to higher rates of comorbidity and higher health care utilization. About 90% of GAD patients experience psychiatric comorbidity, with major depressive disorder co-occurring about 60% of the time.6 Substance use disorders co-occur with GAD more than 20% of the time.2 Despite comorbidities, it is the somatic complaints in GAD that often drive patient requests for medical care.7,8 GAD itself is an independent predictor of heart disease9 and is linked to increased risk of chronic or severe headaches10 and suicide.11,12
Continue to: Work with patients and family toward a diagnosis
Work with patients and family toward a diagnosis
Despite the potential benefits of early identification and treatment of GAD,13 the average elapsed time from symptom onset to initial medication treatment is 7 years.14 Multiple factors likely account for this delay. Clinical presentations can be highly variable,6 with 1 patient presenting primarily with sleep complaints and another with gastrointestinal symptoms. Some medical conditions (TABLE 1)15 and substances (TABLE 2)16-18 can cause secondary anxiety symptoms, and their presence should prompt a thorough evaluation.
Address the mind-body connection. Because uncertainty and ambiguity surrounding a diagnosis often drive worry,19 anxious patients or their family members commonly seek additional medical visits and tests in search of answers. In such instances, it helps to explain the physiologic connection between somatic complaints and anxiety.8 Describe how areas of the brain that manage fear and stress can also cause muscle tension, gastrointestinal complaints, hyperarousal, or sleep disturbance.
Empathy and early psychoeducation on the reason anxiety is being considered can decrease stigma and enable appropriate follow-up and treatment. You might introduce the connection between health complaints and GAD specifically by exploring the amount of worry surrounding the presenting symptoms, followed by a question such as, “Sometimes your worry will fit the situation and sometimes it’ll be too much. Has anyone ever told you that you worry too much?” The patient’s response to such a question could signal a need to use the GAD-7 screening tool1 as an aid to diagnosis and as a baseline measure for monitoring subsequent treatment progress.
Psycho- and pharmacotherapy aspects of management
Let patients choose from among various coping strategies. Be prepared to offer patients user-friendly handouts, reading material, or links to educational Web sites. Many patients are interested in using smartphone applications to learn and practice coping strategies. Although these apps can encourage the regular practice of coping skills, caution teens and parents about privacy issues and the lack of evidence supporting this approach as stand-alone therapy.21 Offering several choices (TABLE 4)
Continue to: For patients who remain focused...
For patients who remain focused on somatic complaints and resist adopting coping skills or treatment, pushing certain recommendations can actually increase resistance to proper treatment.22 Instead, explore their ambivalence, offer facts, express concern about the current course of the illness, and emphasize the need to revisit the discussion at a future appointment. Offer follow-up monitoring to assess the course of the illness and readiness for GAD treatment.
Initiate treatment in a stepwise manner13 for the patient who is ready for GAD treatment. This approach includes education and monitoring; low-intensity interventions (eg, treatment workbooks or group sessions); medication and/or referral for psychotherapy; referral for outpatient psychiatric care; and hospitalization for patients who pose a danger to self or others.13 Studies suggest that patients receiving both psychotherapy and pharmacotherapy benefit from the complementary targeting of symptoms, exhibit increased adherence, and report fewer adverse effects.23
Patients are most likely to benefit from therapy when they have the capacity for introspection and forming friendships (ie, can form a therapeutic alliance). With such patients who have mild or moderate symptoms of GAD, offer cognitive behavioral therapy (CBT) or applied relaxation training. Consider a trial of medication when symptoms are severe, when psychotherapy is not a good option, or when response to psychotherapy is inadequate.13 Medications work by targeting primitive parts of the brain such as the amygdala (bottom up), while psychotherapy targets the cortex or more evolved part of the brain, teaching it to modulate the lower or more primitive structures (top down).24
Medication considerations. Selective serotonin reuptake inhibitors (SSRIs) are considered first-line pharmacotherapy for adult and adolescent patients with GAD.20 However, in adolescents, no SSRIs are approved by the US Food and Drug Administration (FDA) to treat anxiety disorders unassociated with obsessive-compulsive disorder. Use caution if prescribing an SSRI for off-label treatment in an adolescent; talk with the patient and family about the FDA’s black-box warning regarding the potential for suicidality in adolescents.
For adults, selective norepinephrine reuptake inhibitors (SNRIs) are also considered a first-line treatment option.23 SSRIs and SNRIs are well-studied, effective, safe, and better tolerated than earlier antidepressants. However, be aware that both SSRIs and SNRIs are often associated with headache, nausea, and sexual dysfunction. They are dosed once daily and have not been shown to cause dependence. Inform patients that onset of action is often delayed 4 to 8 weeks23 and that there is a risk for anxiety-producing effects early in treatment. To minimize these effects, consider starting treatment at a lower dose and titrate upward more gradually than when treating depression.
Continue to: Continue treatment for 12 months...
Continue treatment for 12 months to reduce the risk of recurrence.23 If response to treatment is insufficient after 2 adequate trials of an SSRI or SNRI, consider second-line agents such as azapirones or benzodiazepines for adults, keeping in mind the risk for dependence with benzodiazepines.13
Evidence supports GABAergic drugs such as gabapentin and pregabalin as off-label treatments for GAD in refractory adult cases.25 In the European Union, pregabalin is approved for use in GAD. Caution is recommended with both drugs due to abuse potential. Next steps for an inadequate response should include referral to Psychiatry or for inpatient care when risk of harm to self or others is high.
CASE
Considering Ms. H’s ability to work and complete daily activities, we talked to her about CBT as a first step and referred her to a therapist in the community. One month after her initial visit with us, Ms. H returned for a follow-up visit and scored a 17 on her GAD-7, still in the severe range. After one CBT session, she had cancelled her second and third appointments due to work conflicts. She had missed some work from oversleeping after worried sleepless nights. Her worries concerned friendships, paying bills, physical appearance, not being able to exercise and therefore gaining weight, and troubles at work and with her mother. She also described several episodes of nightmares after breaking up with a boyfriend.
She agreed to try an SSRI, and we started her on fluoxetine 10 mg/d. We counseled her on SSRI risks and benefits, including the potential for increased suicidal ideation and how to respond if such thoughts developed. Three weeks after starting fluoxetine, Ms. H reported improvement with no adverse effects from the medication, except for decreased appetite and some weight loss, which she welcomed. She had registered for college courses, and her third score on the GAD-7 was an 8.
We increased her fluoxetine dose to 20 mg/d for maintenance. We encouraged her to return to her therapist for CBT and she scheduled that appointment. Therapy records noted a GAD-7 score of 5 at follow-up 8 weeks later. Ms. H reported improved sleep, reduced irritability at home, and better relationships with her mother and friends. She had begun college classes and was writing about her thoughts and worries as part of her CBT homework. She continued follow-up appointments with both her family physician and her therapist.
CORRESPONDENCE
Christopher A. Ebberwein, PhD, Wesley Family Medicine Residency, 850 North Hillside, Wichita, KS 67214; chris. ebberwein@wesleymc.com.
1. Kroenke K, Spitzer RL, Williams JBW, et al. Anxiety disorders in primary care: prevalence, impairment, comorbidity, and detection. Ann Intern Med. 2007;146:317-325.
2. Ruscio AM, Hallion LS, Lim CCW, et al. Cross-sectional comparison of the epidemiology of DSM-5 generalized anxiety disorder across the globe. JAMA Psychiatry. 2017;74:465-475.
3. American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5). Washington, DC: American Psychiatric Publishing; 2013.
4. Fernandez S. Anxiety disorders in childhood and adolescence: a primary care approach. Pediatr Ann. 2017;46:e213-e216.
5. Connolly SD, Bernstein GA. Practice parameter for the assessment and treatment of children and adolescents with anxiety disorders. J Am Acad Child Adolesc Psychiatry. 2007;46:267-283.
6. Reinhold JA, Rickels K. Pharmacological treatments for generalized anxiety disorder in adults: an update. Expert Opin Pharmacother. 2015;16:1669-1681.
7. Kujanpää TS, Jokelainen J, Auvinen JP, et al. The association of generalized anxiety disorder and somatic symptoms with frequent attendance to healthcare services: a cross-sectional study from the Northern Finland Birth Cohort 1966. Int J Psychiatry Med. 2017:52:147-159.
8. Ramsawh HJ, Chavira DA, Stein MB. Burden of anxiety disorders in pediatric medical settings: prevalence, phenomenology, and a research agenda. Arch Pediatr Adolesc Med. 2010;164:965-972. doi:10.1001/archpediatrics.2010.170.
9. Barger SD, Sydeman SJ. Does generalized anxiety disorder predict coronary heart disease risk factors independently of major depressive disorder? J Affect Disord. 2005;88:87-91.
10. Bruffaerts R, Demyttenaere K, Kessler RC, et al. The associations between preexisting mental disorders and subsequent onset of chronic headaches: a worldwide epidemiologic perspective. J Pain. 2015;16:42-52.
11. Husky MM, Olfson M, He J, et al. Twelve-month suicidal symptoms and use of services among adolescents: results from the National Comorbidity Survey. Psychiatr Serv. 2012;63:989-996.
12. Nepon J, Belik S, Bolton J, et al. The relationship between anxiety disorders and suicide attempts: findings from the National Epidemiologic Survey on Alcohol and Related Conditions. Depress Anxiety. 2010;27:791–798.
13. National Institute for Health and Care Excellence (NICE). Generalised anxiety disorder and panic disorder adults: management. nice.org.uk/guidance/cg113. Accessed August 20, 2020.
14. Dell’Osso B, Camuri G, Benatti B, et al. Differences in latency to first pharmacological treatment (duration of untreated illness) in anxiety disorders: a study on patients with panic disorder, generalized anxiety disorder and obsessive-compulsive disorder. Early Interv Psychiatry. 2013;7:374-380.
15. Hales RE, Yudofsky SC, Roberts LW, eds. Textbook of Psychiatry, 6th ed. Arlington, VA: American Psychiatric Publishing: 2014:391-430.
16. Fernandez F, Levy JK, Lachar BL, et al. The management of depression and anxiety in the elderly. J Clin Psychiatry. 1995;56(suppl 2):20-29.
17. Kirkwood CK, Hayes PE. Anxiety disorders. In: DiPiro JT, Talbert RL, Yee GC, et al, eds. Pharmacotherapy: A Pathophysiologic Approach, 3rd ed. Stamford, Conn: Appleton & Lange;1997:1443-1462.
18. Culpepper L. Generalized anxiety disorder and medical illness. J Clin Psychiatry. 2009;70(suppl 2):20-24.
19. Anderson KG, Dugas MJ, Koerner N, et al. Interpretive style and intolerance of uncertainty in individuals with anxiety disorders: a focus on generalized anxiety disorder. J Anxiety Disord. 2012;26:823-832.
20. Satterfield JM, Feldman MD. Anxiety. In Feldman MD, Christensen JF, Satterfield JM, eds. Behavioral Medicine: A Guide for Clinical Practice. New York: McGraw Hill; 2014:271-282.
21. Grist R, Porter J, Stallard P. Mental health mobile apps for preadolescents and adolescents: A systematic review. J Med Internet Res. 2017;19:e176.
22. Rollnick S, Miller W, Butler C. Motivational Interviewing in Health Care: Helping Patients Change Behavior. 1st ed. New York: The Guilford Press; 2008:34-35.
23. Strawn JR, Geriacioti L, Rajdev N, et al. Pharmacotherapy for generalized anxiety disorder in adult and pediatric patients: an evidence-based review. Expert Opin Pharmacother. 2018;19:1057-1070.
24. Ehmke CJ, Nemeroff CB. Paroxetine. In Schatzberg AF, Nemeroff CB, eds. Textbook of Psychopharmacology, 4th ed. Washington, D.C.: American Psychiatric Publishing, Inc.; 2009:321-352.
25. Huh J, Goebert D, Takeshita J, et al. Treatment of generalized anxiety disorder: a comprehensive review of the literature for psychopharmacologic alternatives to newer antidepressants and benzodiazepines. Prim Care Companion CNS Disord. 2011;13: doi:10.4088/PCC.08r00709blu.
1. Kroenke K, Spitzer RL, Williams JBW, et al. Anxiety disorders in primary care: prevalence, impairment, comorbidity, and detection. Ann Intern Med. 2007;146:317-325.
2. Ruscio AM, Hallion LS, Lim CCW, et al. Cross-sectional comparison of the epidemiology of DSM-5 generalized anxiety disorder across the globe. JAMA Psychiatry. 2017;74:465-475.
3. American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5). Washington, DC: American Psychiatric Publishing; 2013.
4. Fernandez S. Anxiety disorders in childhood and adolescence: a primary care approach. Pediatr Ann. 2017;46:e213-e216.
5. Connolly SD, Bernstein GA. Practice parameter for the assessment and treatment of children and adolescents with anxiety disorders. J Am Acad Child Adolesc Psychiatry. 2007;46:267-283.
6. Reinhold JA, Rickels K. Pharmacological treatments for generalized anxiety disorder in adults: an update. Expert Opin Pharmacother. 2015;16:1669-1681.
7. Kujanpää TS, Jokelainen J, Auvinen JP, et al. The association of generalized anxiety disorder and somatic symptoms with frequent attendance to healthcare services: a cross-sectional study from the Northern Finland Birth Cohort 1966. Int J Psychiatry Med. 2017:52:147-159.
8. Ramsawh HJ, Chavira DA, Stein MB. Burden of anxiety disorders in pediatric medical settings: prevalence, phenomenology, and a research agenda. Arch Pediatr Adolesc Med. 2010;164:965-972. doi:10.1001/archpediatrics.2010.170.
9. Barger SD, Sydeman SJ. Does generalized anxiety disorder predict coronary heart disease risk factors independently of major depressive disorder? J Affect Disord. 2005;88:87-91.
10. Bruffaerts R, Demyttenaere K, Kessler RC, et al. The associations between preexisting mental disorders and subsequent onset of chronic headaches: a worldwide epidemiologic perspective. J Pain. 2015;16:42-52.
11. Husky MM, Olfson M, He J, et al. Twelve-month suicidal symptoms and use of services among adolescents: results from the National Comorbidity Survey. Psychiatr Serv. 2012;63:989-996.
12. Nepon J, Belik S, Bolton J, et al. The relationship between anxiety disorders and suicide attempts: findings from the National Epidemiologic Survey on Alcohol and Related Conditions. Depress Anxiety. 2010;27:791–798.
13. National Institute for Health and Care Excellence (NICE). Generalised anxiety disorder and panic disorder adults: management. nice.org.uk/guidance/cg113. Accessed August 20, 2020.
14. Dell’Osso B, Camuri G, Benatti B, et al. Differences in latency to first pharmacological treatment (duration of untreated illness) in anxiety disorders: a study on patients with panic disorder, generalized anxiety disorder and obsessive-compulsive disorder. Early Interv Psychiatry. 2013;7:374-380.
15. Hales RE, Yudofsky SC, Roberts LW, eds. Textbook of Psychiatry, 6th ed. Arlington, VA: American Psychiatric Publishing: 2014:391-430.
16. Fernandez F, Levy JK, Lachar BL, et al. The management of depression and anxiety in the elderly. J Clin Psychiatry. 1995;56(suppl 2):20-29.
17. Kirkwood CK, Hayes PE. Anxiety disorders. In: DiPiro JT, Talbert RL, Yee GC, et al, eds. Pharmacotherapy: A Pathophysiologic Approach, 3rd ed. Stamford, Conn: Appleton & Lange;1997:1443-1462.
18. Culpepper L. Generalized anxiety disorder and medical illness. J Clin Psychiatry. 2009;70(suppl 2):20-24.
19. Anderson KG, Dugas MJ, Koerner N, et al. Interpretive style and intolerance of uncertainty in individuals with anxiety disorders: a focus on generalized anxiety disorder. J Anxiety Disord. 2012;26:823-832.
20. Satterfield JM, Feldman MD. Anxiety. In Feldman MD, Christensen JF, Satterfield JM, eds. Behavioral Medicine: A Guide for Clinical Practice. New York: McGraw Hill; 2014:271-282.
21. Grist R, Porter J, Stallard P. Mental health mobile apps for preadolescents and adolescents: A systematic review. J Med Internet Res. 2017;19:e176.
22. Rollnick S, Miller W, Butler C. Motivational Interviewing in Health Care: Helping Patients Change Behavior. 1st ed. New York: The Guilford Press; 2008:34-35.
23. Strawn JR, Geriacioti L, Rajdev N, et al. Pharmacotherapy for generalized anxiety disorder in adult and pediatric patients: an evidence-based review. Expert Opin Pharmacother. 2018;19:1057-1070.
24. Ehmke CJ, Nemeroff CB. Paroxetine. In Schatzberg AF, Nemeroff CB, eds. Textbook of Psychopharmacology, 4th ed. Washington, D.C.: American Psychiatric Publishing, Inc.; 2009:321-352.
25. Huh J, Goebert D, Takeshita J, et al. Treatment of generalized anxiety disorder: a comprehensive review of the literature for psychopharmacologic alternatives to newer antidepressants and benzodiazepines. Prim Care Companion CNS Disord. 2011;13: doi:10.4088/PCC.08r00709blu.
A practical approach to knee OA
CASE A 73-year-old woman presents to your clinic with 1 year of gradual-onset left knee pain. The pain is worse at the medial knee and at the beginning and end of the day, with some mild improvement after activity in the morning. The patient has already tried oral acetaminophen, an over-the-counter menthol cream, and a soft elastic knee brace, but these interventions have helped only minimally.
On physical exam, there is no obvious deformity of the knee. There is a bit of small joint effusion without redness or warmth. There is mild tenderness to palpation of the medial joint line. Radiographic findings include osteophytes of the medial and lateral tibial plateaus and medial and lateral femoral condyles with mild joint-space narrowing of the medial compartment, consistent with mild osteoarthritis.
How would you manage this patient’s care?
The knee is the most common joint to be affected by osteoarthritis (OA) and accounts for the majority of the disease’s total burden.1 More than 19% of American adults ages ≥ 45 years have knee OA,1,2 and more than half of the people with symptomatic knee OA in the United States are younger than 65 years of age.3 Longer lifespan and increasing rates of obesity are thought to be driving the increasing prevalence of knee OA, although this remains debated.1 Risk factors for knee OA are outlined in TABLE.1,4-8
Diagnosis: Radiographs are helpful, not essential
The diagnosis of knee OA is relatively straightforward. Gradual onset of knee joint pain is present most days, with pain worse after activity and better with rest. Patients are usually middle-aged or older and/or have a distant history of knee joint injury. Other signs, symptoms, and physical exam findings associated with knee OA include: morning stiffness < 30 minutes, crepitus, instability, range-of-motion deficit, varus or valgus deformity, bony exostosis, joint-line tenderness, joint swelling/effusion, and the absence of erythema/warmth.1,9,10
Although radiographs are not necessary to diagnose knee OA, they can be helpful in confirming the diagnosis by assessing the degree and location of OA and ruling out other pathology. Standing, weight-bearing radiographs are particularly helpful for assessing the degree of joint-space narrowing. In addition to joint-space narrowing, radiographic findings indicative of knee OA include marginal osteophytes, subchondral sclerosis, and subchondral cysts. (See FIGURE 1.)
Keep in mind that radiographs are less sensitive for early OA, that the degree of OA seen on radiographs does not correlate well with symptoms, and that radiographic evidence of OA is a common incidental finding—especially in elderly individuals.11 Although not routinely utilized for knee OA diagnosis, magnetic resonance imaging (MRI) can be used to assess for earlier stages of the disease and to rule out pathology associated with the soft tissue and cartilage that is not directly associated with OA.
Continue to: Management
Management: Decrease pain, improve function, slow progression
Because there is no cure for OA, the primary goals of treatment are to decrease pain, improve function of the joint, and slow progression of the disease. As a result, a multifaceted treatment approach is usually undertaken that includes weight reduction and exercise therapy and may include pharmacotherapy, depending on the degree of symptoms. FIGURE 2 contains a summary of the stepwise management of knee OA.
Weight management can slow progression of the disease
Obesity is a causative factor in knee OA.12,13 Patients with knee OA who achieve and maintain an appropriate body weight can potentially slow progression of the disease.13,14 One pound of weight loss can lead to a 4-fold reduction in the load exerted on the knee per step.15
Specific methods of weight reduction are beyond the scope of this article; however, one randomized controlled trial (RCT) involving 399 overweight and obese adults with knee OA found that individuals who participated in a dietary intervention or a combined diet and exercise intervention achieved more weight loss than those who undertook exercise alone.16 Additionally, the diet group had greater reductions in knee compression forces compared to the exercise group, and the combined diet and exercise group had less pain and better function than both the diet group and the exercise group.16 This would suggest that both diet and exercise interventions should be employed in the treatment of knee OA, not only for weight management, but also for knee joint health.
What kind of exercise? Evidence exists to support the utilization of various forms of exercise. In general, land-based therapeutic exercise improves knee pain, physical function, and quality of life, but these benefits often last less than 1 year because people often fail to maintain exercise programs for the long term.17
Specific therapies such as yoga, Tai Chi, balance training, and aquatic exercise have shown some minor improvement in symptoms related to knee OA.18-22 Weight-bearing strength training, non–weight-bearing strength training, and aerobic exercise have all been shown to be effective for short-term pain relief in knee OA, with non–weight-bearing strength training being the most effective.23
Continue to: Strengthening of the upper leg muscles...
Strengthening of the upper leg muscles is thought to be one of the factors involved in reducing pain associated with knee OA.24 Strength training, Tai Chi, and aerobic exercise have also been shown to decrease fall risk in the elderly with knee OA.25 In general, lower impact activities (eg, walking, swimming, biking, yoga) are preferred over higher impact activities (eg, running, jumping) in order to lessen pain with exercise.26-28
Knee orthoses: Many forms and mixed findings
Knee braces come in many forms, including soft braces (eg, elastic sleeves, simple hinged braces) and unloading braces. Many of these braces have been purported to help with knee OA although the evidence remains mixed, with a lack of high-quality trials. A systematic review of RCTs comparing various knee braces, foot orthotics, and conservative treatment for the management of medial compartment OA concluded that the optimal choice for orthosis remains unclear, and long-term evidence is lacking.29
The medial unloading (valgus) knee brace is often used to treat medial compartment OA and varus malalignment of the knee by applying a valgus force, thereby reducing the load on the medial compartment. One recent systematic review concluded that medial unloading braces improve pain from medial compartment OA, but whether they improve function and stiffness is unclear.30 Another study showed that compared to conservative treatment alone, valgus knee bracing has some benefit in decreasing pain and improving knee function.31 Additionally, an 8-year prospective study found that the valgus unloading brace can delay the time before patients need to undergo knee arthroplasty.32 However, another prospective study examining the efficacy of valgus bracing at 2.7 years and 11.2 years showed short-term but not long-term benefit.33
Soft knee braces include a variety of elastic sleeves and simple hinged knee braces. These braces are available commercially at most pharmacies and athletic retail stores. Soft braces are thought to improve pain by a thermal and compressive effect, and to provide stability to the knee joint. One systematic review concluded that soft knee braces have a moderate effect on pain and a small-to-moderate effect on self-reported physical function.34 A small trial showed that soft knee braces reduced pain and dynamic instability in individuals with knee OA.35
In summary, many types of soft knee braces exist, but the evidence for recommending them individually or collectively is limited, as high-quality trials are lacking. However, the available evidence does suggest some mild benefit with regard to pain and function with no concern for adverse effects.
Continue to: Pharmacotherapy
Pharmacotherapy: Oral agents
Acetaminophen. Although people commonly use this over-the-counter analgesic for knee OA pain, recent meta-analyses have shown that acetaminophen provides little to no benefit.36,37 Furthermore, although many believe acetaminophen causes fewer adverse effects than oral nonsteroidal anti-inflammatory drugs (NSAIDs), liver, gastrointestinal, and renal complications are not uncommon with long-term acetaminophen use. Nevertheless, a trial of acetaminophen may be beneficial in patients with cardiovascular disease or who are taking oral anticoagulants.
Oral NSAIDs. Many studies have concluded that NSAIDs are more effective at controlling pain from knee OA than acetaminophen.37,38 They are among the most commonly prescribed treatments for knee OA, but patients and their physicians should be cautious about long-term use because of potential cardiac, renal, gastrointestinal, and other adverse effects. Although evidence regarding optimal frequency of use is scarce, oral NSAIDs should be used intermittently and at the minimal effective dose in order to decrease the risk of adverse events.
One recent meta-analysis of RCTs concluded that diclofenac at a dose of 150 mg/d is the most effective NSAID for improving pain and function associated with knee OA.37 Another recent systematic review and meta-analysis analyzing multiple pharmacologic treatments found an association between celecoxib and decreased pain from knee OA.39 However, this study also concluded that uncertainty surrounded all of the estimates of effect size for change in pain compared to placebo for all of the pharmacologic treatments included in the study.39
A meta-analysis of RCTs comparing celecoxib to no treatment, placebo, naproxen, and diclofenac concluded that celecoxib is slightly better than placebo and the aforementioned NSAIDs in reducing pain and improving function in general OA. However, the authors had reservations regarding pharmaceutical industry involvement in the studies and overall limited data.40
With all of that said, the American Academy of Orthopaedic Surgeons (AAOS) recommends strongly for the use of oral NSAIDs in the management of knee OA.41
Continue to: Glucosamine and chondroitin
Glucosamine and chondroitin. Glucosamine and chondroitin are supplements that have gained popularity in the treatment of knee OA. These constituents are found naturally in articular cartilage, which explains the rationale for their use. Glucosamine and chondroitin (or a combination of the 2) are associated with few adverse effects, but the evidence to support their use in knee OA management is mixed.
One large double-blind RCT (the Glucosamine/Chondroitin Arthritis Intervention Trial [GAIT]) concluded that glucosamine, chondroitin, or the combination of the 2 did not have a significant effect on reducing pain from knee OA compared to placebo and did not slow structural joint disease.42 However, this same study found that in a subset of patients with moderate-to-severe knee OA, the combination of glucosamine and chondroitin was mildly effective in reducing pain.42
Multiple studies have shown either no benefit, inconsistent results, or limited benefit of glucosamine and chondroitin in the treatment of knee OA, with the patented crystalline form of glucosamine showing the most efficacy.43-47 The AAOS and the American College of Rheumatology (ACR) do not recommend glucosamine and chondroitin for knee OA management.10,41
In summary, the evidence for glucosamine, chondroitin, or a combination of the 2 for knee OA is mixed with likely limited benefit, but because they are associated with few adverse effects, patients may be offered a 3- to 6-month trial of these supplements if other effective options are exhausted.
Injections
Limited-quality evidence suggests that oral NSAIDs and intra-articular (IA) hyaluronic acid (HA) injections are equally efficacious for knee OA pain.38,48 There is insufficient evidence directly comparing oral NSAIDs with IA corticosteroid (CS) injections.
Continue to: HA is found naturally...
HA is found naturally in articular cartilage, which explains the rationale behind its use. A network meta-analysis performed by the American Medical Society for Sports Medicine concluded that knee OA is more likely to respond to IAHA than to IACS or IA placebo, leading the society to recommend the use of IAHA in knee OA management, especially for patients > 60 years with mild-to-moderate knee OA.9 Conversely, the AAOS does not recommend the use of IAHA, and the ACR does not recommend for or against the use of IAHA.10,41
IACSs are commonly used to provide pain relief in those with moderate-to-severe knee OA. There is evidence that a single IACS injection provides mild pain relief for up to 6 weeks.49 However, there is some concern that repetitive IACS injections may speed cartilage loss. A 2-year randomized double-blind placebo-controlled trial comparing the effectiveness of repetitive IA triamcinolone vs saline in knee OA found no difference in pain severity and concluded that there was greater cartilage volume loss in the triamcinolone group.50
AAOS does not recommend for or against the use of IACSs, whereas the ACR does recommend for the use of IACSs.10,41 Given the available evidence, conservative use of IACS injections remains an option for patients with refractory moderate-to-severe knee OA.
Topicals
Topical analgesics are often utilized for knee OA because of their efficacy, tolerability, low risk of adverse effects, and ease of use. They are generally recommended over oral NSAIDs in the elderly and in individuals at risk for cardiac, renal, and gastrointestinal complications from oral NSAIDs.
One review found that topical diclofenac and topical ketoprofen were comparable to the oral forms of these medications.51 One RCT concluded that topical and oral diclofenac were equally efficacious in treating knee OA symptoms, although topical diclofenac was associated with significantly fewer gastrointestinal adverse effects.52 In multiple randomized trials, topical diclofenac has shown efficacy compared to placebo.53-55 A recent systematic review and meta-analysis of RCTs concluded that topical NSAIDs were safe and effective for treating general OA compared to placebo, with diclofenac patches most effective for pain relief and piroxicam most effective for functional improvement.56
Continue to: Topical capsaicin has shown...
Topical capsaicin has shown some efficacy in treating pain associated with knee OA.57 One meta-analysis of RCTs concluded that topical NSAIDs and capsaicin may be equally efficacious for OA-associated pain relief, although none of the RCTs directly compared the two.58 The major limitation of capsaicin is a patient-reported mild-to-moderate burning sensation with application that may decrease compliance.
Emerging treatments: IA PRP & extended-release IA triamcinolone acetonide
IA platelet-rich plasma (PRP) has been investigated for efficacy in treating knee OA. PRP is thought to decrease inflammation in the joint, although its exact mechanism remains unknown.59 Multiple studies have shown some benefit of PRP in reducing pain and improving function in individuals with knee OA, but nearly all of these studies have failed to show a clear benefit of PRP over HA injections.59-63 Additionally, the authors of most of these studies mention a high risk of bias. PRP therapy is expensive and generally is not covered by insurance companies, which precludes its use for many people.
Extended-release (ER) IA triamcinolone acetonide (Zilretta) has shown some superiority to standard IA triamcinolone acetonide in both degree and duration of pain relief for knee OA.64-66 The ER version tolerability did not differ from placebo and also showed prolonged synovial presence, lower systemic absorption, and lower blood glucose elevations compared with standard triamcinolone.64-66
Surgical intervention: A last resort
Select patients with severe pain and disability from knee OA that is refractory to conservative management options should be referred for consideration of knee arthroplasty. Age, weight, OA location, and degree of OA are all considered with respect to knee arthroplasty timing and technique.
There is good evidence that arthroscopy with debridement, on the other hand, is no more effective than conservative management.67
Continue to: Unicompartmental or "partial"...
Unicompartmental or “partial” knee replacements are reserved for select cases when 1 knee compartment has a significantly higher degree of degenerative change.
CASE After reviewing the therapeutic options with your patient, you agree that she will undergo a course of physical therapy and try using topical diclofenac along with a hinged knee brace. Because of the patient’s age and co-morbidities of cardiovascular disease and mild chronic kidney disease, oral NSAIDs are avoided at this time.
The patient returns to the office in 2 months reporting mild improvement in her pain. To provide additional pain relief, an ultrasound-guided IA steroid injection is attempted. The patient also continues home physical therapy, activity modification, topical diclofenac, and use of a hinged knee brace.
She returns to the office 2 months later, reporting continued improvement in her pain. No further intervention is undertaken at this time.
CORRESPONDENCE
Ryan A. Sprouse, MD, CAQSM, West Virginia University School of Medicine–Eastern Campus, WVU Medicine Orthopaedics and Sports Medicine, 912 Somerset Boulevard, Charles Town, WV 25414; rsprouse@wvumedicine.org.
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56. Zeng C, Wei J, Persson MSM, et al. Relative efficacy and safety of topical non-steroidal anti-inflammatory drugs for osteoarthritis: a systematic review and network meta-analysis of randomised controlled trials and observational studies. Br J Sports Med. 2018;52:642-650.
57. Guedes V, Castro JP, Brito I. Topical capsaicin for pain in osteoarthritis: a literature review. Reumatol Clin. 2018;14:40-45.
58. Persson MSM, Stocks J, Walsh DA, et al. The relative efficacy of topical non-steroidal anti-inflammatory drugs and capsaicin in osteoarthritis: a network meta-analysis of randomised controlled trials. Osteoarthritis Cartilage. 2018;26:1575-1582.
59. Cole BJ, Karas V, Hussey K, et al. Hyaluronic acid versus platelet-rich plasma: a prospective, double-blind randomized controlled trial comparing clinical outcomes and effects on intra-articular biology for the treatment of knee osteoarthritis. Am J Sports Med. 2017;45:339-346.
60. Laudy AB, Bakker EW, Rekers M, et al. Efficacy of platelet-rich plasma injections in osteoarthritis of the knee: a systematic review and meta-analysis. Br J Sports Med. 2015;49:657-672.
61. Han Y, Huang H, Pan J, et al. Meta-analysis comparing platelet-rich plasma vs hyaluronic acid injection in patients with knee osteoarthritis. Pain Med. 2019;20:1418-1429.
62. Filardo G, Di Matteo B, Di Martino A, et al. Platelet-rich plasma intra-articular knee injections show no superiority versus viscosupplementation: a randomized controlled trial. Am J Sports Med. 2015;43:1575-1582.
63. Di Martino A, Di Matteo B, Papio T, et al. Platelet-rich plasma versus hyaluronic acid injections for the treatment of knee osteoarthritis: results at 5 years of a double-blind, randomized controlled trial. Am J Sports Med. 2019;47:347-354.
64. Bodick N, Lufkin J, Willwerth C, et al. An intra-articular, extended-release formulation of triamcinolone acetonide prolongs and amplifies analgesic effect in patients with osteoarthritis of the knee: a randomized clinical trial. J Bone Joint Surg Am. 2015;97:877-888.
65. Conaghan PG, Cohen SB, Berenbaum F, et al. Brief report: a phase IIb trial of a novel extended-release microsphere formulation of triamcinolone acetonide for intraarticular injection in knee osteoarthritis. Arthritis Rheumatol. 2018;70:204-211.
66. Conaghan PG, Hunter DJ, Cohen SB, et al. Effects of a single intra-articular injection of a microsphere formulation of triamcinolone acetonide on knee osteoarthritis pain: a double-blinded, randomized, placebo-controlled, multinational study. J Bone Jt Surg Am. 2018;100:666–677.
67. Thorlund JB, Juhl CB, Roos EM, et al. Arthroscopic surgery for degenerative knee: systematic review and meta-analysis of benefits and harms. BMJ. 2015;350:h2747.
CASE A 73-year-old woman presents to your clinic with 1 year of gradual-onset left knee pain. The pain is worse at the medial knee and at the beginning and end of the day, with some mild improvement after activity in the morning. The patient has already tried oral acetaminophen, an over-the-counter menthol cream, and a soft elastic knee brace, but these interventions have helped only minimally.
On physical exam, there is no obvious deformity of the knee. There is a bit of small joint effusion without redness or warmth. There is mild tenderness to palpation of the medial joint line. Radiographic findings include osteophytes of the medial and lateral tibial plateaus and medial and lateral femoral condyles with mild joint-space narrowing of the medial compartment, consistent with mild osteoarthritis.
How would you manage this patient’s care?
The knee is the most common joint to be affected by osteoarthritis (OA) and accounts for the majority of the disease’s total burden.1 More than 19% of American adults ages ≥ 45 years have knee OA,1,2 and more than half of the people with symptomatic knee OA in the United States are younger than 65 years of age.3 Longer lifespan and increasing rates of obesity are thought to be driving the increasing prevalence of knee OA, although this remains debated.1 Risk factors for knee OA are outlined in TABLE.1,4-8
Diagnosis: Radiographs are helpful, not essential
The diagnosis of knee OA is relatively straightforward. Gradual onset of knee joint pain is present most days, with pain worse after activity and better with rest. Patients are usually middle-aged or older and/or have a distant history of knee joint injury. Other signs, symptoms, and physical exam findings associated with knee OA include: morning stiffness < 30 minutes, crepitus, instability, range-of-motion deficit, varus or valgus deformity, bony exostosis, joint-line tenderness, joint swelling/effusion, and the absence of erythema/warmth.1,9,10
Although radiographs are not necessary to diagnose knee OA, they can be helpful in confirming the diagnosis by assessing the degree and location of OA and ruling out other pathology. Standing, weight-bearing radiographs are particularly helpful for assessing the degree of joint-space narrowing. In addition to joint-space narrowing, radiographic findings indicative of knee OA include marginal osteophytes, subchondral sclerosis, and subchondral cysts. (See FIGURE 1.)
Keep in mind that radiographs are less sensitive for early OA, that the degree of OA seen on radiographs does not correlate well with symptoms, and that radiographic evidence of OA is a common incidental finding—especially in elderly individuals.11 Although not routinely utilized for knee OA diagnosis, magnetic resonance imaging (MRI) can be used to assess for earlier stages of the disease and to rule out pathology associated with the soft tissue and cartilage that is not directly associated with OA.
Continue to: Management
Management: Decrease pain, improve function, slow progression
Because there is no cure for OA, the primary goals of treatment are to decrease pain, improve function of the joint, and slow progression of the disease. As a result, a multifaceted treatment approach is usually undertaken that includes weight reduction and exercise therapy and may include pharmacotherapy, depending on the degree of symptoms. FIGURE 2 contains a summary of the stepwise management of knee OA.
Weight management can slow progression of the disease
Obesity is a causative factor in knee OA.12,13 Patients with knee OA who achieve and maintain an appropriate body weight can potentially slow progression of the disease.13,14 One pound of weight loss can lead to a 4-fold reduction in the load exerted on the knee per step.15
Specific methods of weight reduction are beyond the scope of this article; however, one randomized controlled trial (RCT) involving 399 overweight and obese adults with knee OA found that individuals who participated in a dietary intervention or a combined diet and exercise intervention achieved more weight loss than those who undertook exercise alone.16 Additionally, the diet group had greater reductions in knee compression forces compared to the exercise group, and the combined diet and exercise group had less pain and better function than both the diet group and the exercise group.16 This would suggest that both diet and exercise interventions should be employed in the treatment of knee OA, not only for weight management, but also for knee joint health.
What kind of exercise? Evidence exists to support the utilization of various forms of exercise. In general, land-based therapeutic exercise improves knee pain, physical function, and quality of life, but these benefits often last less than 1 year because people often fail to maintain exercise programs for the long term.17
Specific therapies such as yoga, Tai Chi, balance training, and aquatic exercise have shown some minor improvement in symptoms related to knee OA.18-22 Weight-bearing strength training, non–weight-bearing strength training, and aerobic exercise have all been shown to be effective for short-term pain relief in knee OA, with non–weight-bearing strength training being the most effective.23
Continue to: Strengthening of the upper leg muscles...
Strengthening of the upper leg muscles is thought to be one of the factors involved in reducing pain associated with knee OA.24 Strength training, Tai Chi, and aerobic exercise have also been shown to decrease fall risk in the elderly with knee OA.25 In general, lower impact activities (eg, walking, swimming, biking, yoga) are preferred over higher impact activities (eg, running, jumping) in order to lessen pain with exercise.26-28
Knee orthoses: Many forms and mixed findings
Knee braces come in many forms, including soft braces (eg, elastic sleeves, simple hinged braces) and unloading braces. Many of these braces have been purported to help with knee OA although the evidence remains mixed, with a lack of high-quality trials. A systematic review of RCTs comparing various knee braces, foot orthotics, and conservative treatment for the management of medial compartment OA concluded that the optimal choice for orthosis remains unclear, and long-term evidence is lacking.29
The medial unloading (valgus) knee brace is often used to treat medial compartment OA and varus malalignment of the knee by applying a valgus force, thereby reducing the load on the medial compartment. One recent systematic review concluded that medial unloading braces improve pain from medial compartment OA, but whether they improve function and stiffness is unclear.30 Another study showed that compared to conservative treatment alone, valgus knee bracing has some benefit in decreasing pain and improving knee function.31 Additionally, an 8-year prospective study found that the valgus unloading brace can delay the time before patients need to undergo knee arthroplasty.32 However, another prospective study examining the efficacy of valgus bracing at 2.7 years and 11.2 years showed short-term but not long-term benefit.33
Soft knee braces include a variety of elastic sleeves and simple hinged knee braces. These braces are available commercially at most pharmacies and athletic retail stores. Soft braces are thought to improve pain by a thermal and compressive effect, and to provide stability to the knee joint. One systematic review concluded that soft knee braces have a moderate effect on pain and a small-to-moderate effect on self-reported physical function.34 A small trial showed that soft knee braces reduced pain and dynamic instability in individuals with knee OA.35
In summary, many types of soft knee braces exist, but the evidence for recommending them individually or collectively is limited, as high-quality trials are lacking. However, the available evidence does suggest some mild benefit with regard to pain and function with no concern for adverse effects.
Continue to: Pharmacotherapy
Pharmacotherapy: Oral agents
Acetaminophen. Although people commonly use this over-the-counter analgesic for knee OA pain, recent meta-analyses have shown that acetaminophen provides little to no benefit.36,37 Furthermore, although many believe acetaminophen causes fewer adverse effects than oral nonsteroidal anti-inflammatory drugs (NSAIDs), liver, gastrointestinal, and renal complications are not uncommon with long-term acetaminophen use. Nevertheless, a trial of acetaminophen may be beneficial in patients with cardiovascular disease or who are taking oral anticoagulants.
Oral NSAIDs. Many studies have concluded that NSAIDs are more effective at controlling pain from knee OA than acetaminophen.37,38 They are among the most commonly prescribed treatments for knee OA, but patients and their physicians should be cautious about long-term use because of potential cardiac, renal, gastrointestinal, and other adverse effects. Although evidence regarding optimal frequency of use is scarce, oral NSAIDs should be used intermittently and at the minimal effective dose in order to decrease the risk of adverse events.
One recent meta-analysis of RCTs concluded that diclofenac at a dose of 150 mg/d is the most effective NSAID for improving pain and function associated with knee OA.37 Another recent systematic review and meta-analysis analyzing multiple pharmacologic treatments found an association between celecoxib and decreased pain from knee OA.39 However, this study also concluded that uncertainty surrounded all of the estimates of effect size for change in pain compared to placebo for all of the pharmacologic treatments included in the study.39
A meta-analysis of RCTs comparing celecoxib to no treatment, placebo, naproxen, and diclofenac concluded that celecoxib is slightly better than placebo and the aforementioned NSAIDs in reducing pain and improving function in general OA. However, the authors had reservations regarding pharmaceutical industry involvement in the studies and overall limited data.40
With all of that said, the American Academy of Orthopaedic Surgeons (AAOS) recommends strongly for the use of oral NSAIDs in the management of knee OA.41
Continue to: Glucosamine and chondroitin
Glucosamine and chondroitin. Glucosamine and chondroitin are supplements that have gained popularity in the treatment of knee OA. These constituents are found naturally in articular cartilage, which explains the rationale for their use. Glucosamine and chondroitin (or a combination of the 2) are associated with few adverse effects, but the evidence to support their use in knee OA management is mixed.
One large double-blind RCT (the Glucosamine/Chondroitin Arthritis Intervention Trial [GAIT]) concluded that glucosamine, chondroitin, or the combination of the 2 did not have a significant effect on reducing pain from knee OA compared to placebo and did not slow structural joint disease.42 However, this same study found that in a subset of patients with moderate-to-severe knee OA, the combination of glucosamine and chondroitin was mildly effective in reducing pain.42
Multiple studies have shown either no benefit, inconsistent results, or limited benefit of glucosamine and chondroitin in the treatment of knee OA, with the patented crystalline form of glucosamine showing the most efficacy.43-47 The AAOS and the American College of Rheumatology (ACR) do not recommend glucosamine and chondroitin for knee OA management.10,41
In summary, the evidence for glucosamine, chondroitin, or a combination of the 2 for knee OA is mixed with likely limited benefit, but because they are associated with few adverse effects, patients may be offered a 3- to 6-month trial of these supplements if other effective options are exhausted.
Injections
Limited-quality evidence suggests that oral NSAIDs and intra-articular (IA) hyaluronic acid (HA) injections are equally efficacious for knee OA pain.38,48 There is insufficient evidence directly comparing oral NSAIDs with IA corticosteroid (CS) injections.
Continue to: HA is found naturally...
HA is found naturally in articular cartilage, which explains the rationale behind its use. A network meta-analysis performed by the American Medical Society for Sports Medicine concluded that knee OA is more likely to respond to IAHA than to IACS or IA placebo, leading the society to recommend the use of IAHA in knee OA management, especially for patients > 60 years with mild-to-moderate knee OA.9 Conversely, the AAOS does not recommend the use of IAHA, and the ACR does not recommend for or against the use of IAHA.10,41
IACSs are commonly used to provide pain relief in those with moderate-to-severe knee OA. There is evidence that a single IACS injection provides mild pain relief for up to 6 weeks.49 However, there is some concern that repetitive IACS injections may speed cartilage loss. A 2-year randomized double-blind placebo-controlled trial comparing the effectiveness of repetitive IA triamcinolone vs saline in knee OA found no difference in pain severity and concluded that there was greater cartilage volume loss in the triamcinolone group.50
AAOS does not recommend for or against the use of IACSs, whereas the ACR does recommend for the use of IACSs.10,41 Given the available evidence, conservative use of IACS injections remains an option for patients with refractory moderate-to-severe knee OA.
Topicals
Topical analgesics are often utilized for knee OA because of their efficacy, tolerability, low risk of adverse effects, and ease of use. They are generally recommended over oral NSAIDs in the elderly and in individuals at risk for cardiac, renal, and gastrointestinal complications from oral NSAIDs.
One review found that topical diclofenac and topical ketoprofen were comparable to the oral forms of these medications.51 One RCT concluded that topical and oral diclofenac were equally efficacious in treating knee OA symptoms, although topical diclofenac was associated with significantly fewer gastrointestinal adverse effects.52 In multiple randomized trials, topical diclofenac has shown efficacy compared to placebo.53-55 A recent systematic review and meta-analysis of RCTs concluded that topical NSAIDs were safe and effective for treating general OA compared to placebo, with diclofenac patches most effective for pain relief and piroxicam most effective for functional improvement.56
Continue to: Topical capsaicin has shown...
Topical capsaicin has shown some efficacy in treating pain associated with knee OA.57 One meta-analysis of RCTs concluded that topical NSAIDs and capsaicin may be equally efficacious for OA-associated pain relief, although none of the RCTs directly compared the two.58 The major limitation of capsaicin is a patient-reported mild-to-moderate burning sensation with application that may decrease compliance.
Emerging treatments: IA PRP & extended-release IA triamcinolone acetonide
IA platelet-rich plasma (PRP) has been investigated for efficacy in treating knee OA. PRP is thought to decrease inflammation in the joint, although its exact mechanism remains unknown.59 Multiple studies have shown some benefit of PRP in reducing pain and improving function in individuals with knee OA, but nearly all of these studies have failed to show a clear benefit of PRP over HA injections.59-63 Additionally, the authors of most of these studies mention a high risk of bias. PRP therapy is expensive and generally is not covered by insurance companies, which precludes its use for many people.
Extended-release (ER) IA triamcinolone acetonide (Zilretta) has shown some superiority to standard IA triamcinolone acetonide in both degree and duration of pain relief for knee OA.64-66 The ER version tolerability did not differ from placebo and also showed prolonged synovial presence, lower systemic absorption, and lower blood glucose elevations compared with standard triamcinolone.64-66
Surgical intervention: A last resort
Select patients with severe pain and disability from knee OA that is refractory to conservative management options should be referred for consideration of knee arthroplasty. Age, weight, OA location, and degree of OA are all considered with respect to knee arthroplasty timing and technique.
There is good evidence that arthroscopy with debridement, on the other hand, is no more effective than conservative management.67
Continue to: Unicompartmental or "partial"...
Unicompartmental or “partial” knee replacements are reserved for select cases when 1 knee compartment has a significantly higher degree of degenerative change.
CASE After reviewing the therapeutic options with your patient, you agree that she will undergo a course of physical therapy and try using topical diclofenac along with a hinged knee brace. Because of the patient’s age and co-morbidities of cardiovascular disease and mild chronic kidney disease, oral NSAIDs are avoided at this time.
The patient returns to the office in 2 months reporting mild improvement in her pain. To provide additional pain relief, an ultrasound-guided IA steroid injection is attempted. The patient also continues home physical therapy, activity modification, topical diclofenac, and use of a hinged knee brace.
She returns to the office 2 months later, reporting continued improvement in her pain. No further intervention is undertaken at this time.
CORRESPONDENCE
Ryan A. Sprouse, MD, CAQSM, West Virginia University School of Medicine–Eastern Campus, WVU Medicine Orthopaedics and Sports Medicine, 912 Somerset Boulevard, Charles Town, WV 25414; rsprouse@wvumedicine.org.
CASE A 73-year-old woman presents to your clinic with 1 year of gradual-onset left knee pain. The pain is worse at the medial knee and at the beginning and end of the day, with some mild improvement after activity in the morning. The patient has already tried oral acetaminophen, an over-the-counter menthol cream, and a soft elastic knee brace, but these interventions have helped only minimally.
On physical exam, there is no obvious deformity of the knee. There is a bit of small joint effusion without redness or warmth. There is mild tenderness to palpation of the medial joint line. Radiographic findings include osteophytes of the medial and lateral tibial plateaus and medial and lateral femoral condyles with mild joint-space narrowing of the medial compartment, consistent with mild osteoarthritis.
How would you manage this patient’s care?
The knee is the most common joint to be affected by osteoarthritis (OA) and accounts for the majority of the disease’s total burden.1 More than 19% of American adults ages ≥ 45 years have knee OA,1,2 and more than half of the people with symptomatic knee OA in the United States are younger than 65 years of age.3 Longer lifespan and increasing rates of obesity are thought to be driving the increasing prevalence of knee OA, although this remains debated.1 Risk factors for knee OA are outlined in TABLE.1,4-8
Diagnosis: Radiographs are helpful, not essential
The diagnosis of knee OA is relatively straightforward. Gradual onset of knee joint pain is present most days, with pain worse after activity and better with rest. Patients are usually middle-aged or older and/or have a distant history of knee joint injury. Other signs, symptoms, and physical exam findings associated with knee OA include: morning stiffness < 30 minutes, crepitus, instability, range-of-motion deficit, varus or valgus deformity, bony exostosis, joint-line tenderness, joint swelling/effusion, and the absence of erythema/warmth.1,9,10
Although radiographs are not necessary to diagnose knee OA, they can be helpful in confirming the diagnosis by assessing the degree and location of OA and ruling out other pathology. Standing, weight-bearing radiographs are particularly helpful for assessing the degree of joint-space narrowing. In addition to joint-space narrowing, radiographic findings indicative of knee OA include marginal osteophytes, subchondral sclerosis, and subchondral cysts. (See FIGURE 1.)
Keep in mind that radiographs are less sensitive for early OA, that the degree of OA seen on radiographs does not correlate well with symptoms, and that radiographic evidence of OA is a common incidental finding—especially in elderly individuals.11 Although not routinely utilized for knee OA diagnosis, magnetic resonance imaging (MRI) can be used to assess for earlier stages of the disease and to rule out pathology associated with the soft tissue and cartilage that is not directly associated with OA.
Continue to: Management
Management: Decrease pain, improve function, slow progression
Because there is no cure for OA, the primary goals of treatment are to decrease pain, improve function of the joint, and slow progression of the disease. As a result, a multifaceted treatment approach is usually undertaken that includes weight reduction and exercise therapy and may include pharmacotherapy, depending on the degree of symptoms. FIGURE 2 contains a summary of the stepwise management of knee OA.
Weight management can slow progression of the disease
Obesity is a causative factor in knee OA.12,13 Patients with knee OA who achieve and maintain an appropriate body weight can potentially slow progression of the disease.13,14 One pound of weight loss can lead to a 4-fold reduction in the load exerted on the knee per step.15
Specific methods of weight reduction are beyond the scope of this article; however, one randomized controlled trial (RCT) involving 399 overweight and obese adults with knee OA found that individuals who participated in a dietary intervention or a combined diet and exercise intervention achieved more weight loss than those who undertook exercise alone.16 Additionally, the diet group had greater reductions in knee compression forces compared to the exercise group, and the combined diet and exercise group had less pain and better function than both the diet group and the exercise group.16 This would suggest that both diet and exercise interventions should be employed in the treatment of knee OA, not only for weight management, but also for knee joint health.
What kind of exercise? Evidence exists to support the utilization of various forms of exercise. In general, land-based therapeutic exercise improves knee pain, physical function, and quality of life, but these benefits often last less than 1 year because people often fail to maintain exercise programs for the long term.17
Specific therapies such as yoga, Tai Chi, balance training, and aquatic exercise have shown some minor improvement in symptoms related to knee OA.18-22 Weight-bearing strength training, non–weight-bearing strength training, and aerobic exercise have all been shown to be effective for short-term pain relief in knee OA, with non–weight-bearing strength training being the most effective.23
Continue to: Strengthening of the upper leg muscles...
Strengthening of the upper leg muscles is thought to be one of the factors involved in reducing pain associated with knee OA.24 Strength training, Tai Chi, and aerobic exercise have also been shown to decrease fall risk in the elderly with knee OA.25 In general, lower impact activities (eg, walking, swimming, biking, yoga) are preferred over higher impact activities (eg, running, jumping) in order to lessen pain with exercise.26-28
Knee orthoses: Many forms and mixed findings
Knee braces come in many forms, including soft braces (eg, elastic sleeves, simple hinged braces) and unloading braces. Many of these braces have been purported to help with knee OA although the evidence remains mixed, with a lack of high-quality trials. A systematic review of RCTs comparing various knee braces, foot orthotics, and conservative treatment for the management of medial compartment OA concluded that the optimal choice for orthosis remains unclear, and long-term evidence is lacking.29
The medial unloading (valgus) knee brace is often used to treat medial compartment OA and varus malalignment of the knee by applying a valgus force, thereby reducing the load on the medial compartment. One recent systematic review concluded that medial unloading braces improve pain from medial compartment OA, but whether they improve function and stiffness is unclear.30 Another study showed that compared to conservative treatment alone, valgus knee bracing has some benefit in decreasing pain and improving knee function.31 Additionally, an 8-year prospective study found that the valgus unloading brace can delay the time before patients need to undergo knee arthroplasty.32 However, another prospective study examining the efficacy of valgus bracing at 2.7 years and 11.2 years showed short-term but not long-term benefit.33
Soft knee braces include a variety of elastic sleeves and simple hinged knee braces. These braces are available commercially at most pharmacies and athletic retail stores. Soft braces are thought to improve pain by a thermal and compressive effect, and to provide stability to the knee joint. One systematic review concluded that soft knee braces have a moderate effect on pain and a small-to-moderate effect on self-reported physical function.34 A small trial showed that soft knee braces reduced pain and dynamic instability in individuals with knee OA.35
In summary, many types of soft knee braces exist, but the evidence for recommending them individually or collectively is limited, as high-quality trials are lacking. However, the available evidence does suggest some mild benefit with regard to pain and function with no concern for adverse effects.
Continue to: Pharmacotherapy
Pharmacotherapy: Oral agents
Acetaminophen. Although people commonly use this over-the-counter analgesic for knee OA pain, recent meta-analyses have shown that acetaminophen provides little to no benefit.36,37 Furthermore, although many believe acetaminophen causes fewer adverse effects than oral nonsteroidal anti-inflammatory drugs (NSAIDs), liver, gastrointestinal, and renal complications are not uncommon with long-term acetaminophen use. Nevertheless, a trial of acetaminophen may be beneficial in patients with cardiovascular disease or who are taking oral anticoagulants.
Oral NSAIDs. Many studies have concluded that NSAIDs are more effective at controlling pain from knee OA than acetaminophen.37,38 They are among the most commonly prescribed treatments for knee OA, but patients and their physicians should be cautious about long-term use because of potential cardiac, renal, gastrointestinal, and other adverse effects. Although evidence regarding optimal frequency of use is scarce, oral NSAIDs should be used intermittently and at the minimal effective dose in order to decrease the risk of adverse events.
One recent meta-analysis of RCTs concluded that diclofenac at a dose of 150 mg/d is the most effective NSAID for improving pain and function associated with knee OA.37 Another recent systematic review and meta-analysis analyzing multiple pharmacologic treatments found an association between celecoxib and decreased pain from knee OA.39 However, this study also concluded that uncertainty surrounded all of the estimates of effect size for change in pain compared to placebo for all of the pharmacologic treatments included in the study.39
A meta-analysis of RCTs comparing celecoxib to no treatment, placebo, naproxen, and diclofenac concluded that celecoxib is slightly better than placebo and the aforementioned NSAIDs in reducing pain and improving function in general OA. However, the authors had reservations regarding pharmaceutical industry involvement in the studies and overall limited data.40
With all of that said, the American Academy of Orthopaedic Surgeons (AAOS) recommends strongly for the use of oral NSAIDs in the management of knee OA.41
Continue to: Glucosamine and chondroitin
Glucosamine and chondroitin. Glucosamine and chondroitin are supplements that have gained popularity in the treatment of knee OA. These constituents are found naturally in articular cartilage, which explains the rationale for their use. Glucosamine and chondroitin (or a combination of the 2) are associated with few adverse effects, but the evidence to support their use in knee OA management is mixed.
One large double-blind RCT (the Glucosamine/Chondroitin Arthritis Intervention Trial [GAIT]) concluded that glucosamine, chondroitin, or the combination of the 2 did not have a significant effect on reducing pain from knee OA compared to placebo and did not slow structural joint disease.42 However, this same study found that in a subset of patients with moderate-to-severe knee OA, the combination of glucosamine and chondroitin was mildly effective in reducing pain.42
Multiple studies have shown either no benefit, inconsistent results, or limited benefit of glucosamine and chondroitin in the treatment of knee OA, with the patented crystalline form of glucosamine showing the most efficacy.43-47 The AAOS and the American College of Rheumatology (ACR) do not recommend glucosamine and chondroitin for knee OA management.10,41
In summary, the evidence for glucosamine, chondroitin, or a combination of the 2 for knee OA is mixed with likely limited benefit, but because they are associated with few adverse effects, patients may be offered a 3- to 6-month trial of these supplements if other effective options are exhausted.
Injections
Limited-quality evidence suggests that oral NSAIDs and intra-articular (IA) hyaluronic acid (HA) injections are equally efficacious for knee OA pain.38,48 There is insufficient evidence directly comparing oral NSAIDs with IA corticosteroid (CS) injections.
Continue to: HA is found naturally...
HA is found naturally in articular cartilage, which explains the rationale behind its use. A network meta-analysis performed by the American Medical Society for Sports Medicine concluded that knee OA is more likely to respond to IAHA than to IACS or IA placebo, leading the society to recommend the use of IAHA in knee OA management, especially for patients > 60 years with mild-to-moderate knee OA.9 Conversely, the AAOS does not recommend the use of IAHA, and the ACR does not recommend for or against the use of IAHA.10,41
IACSs are commonly used to provide pain relief in those with moderate-to-severe knee OA. There is evidence that a single IACS injection provides mild pain relief for up to 6 weeks.49 However, there is some concern that repetitive IACS injections may speed cartilage loss. A 2-year randomized double-blind placebo-controlled trial comparing the effectiveness of repetitive IA triamcinolone vs saline in knee OA found no difference in pain severity and concluded that there was greater cartilage volume loss in the triamcinolone group.50
AAOS does not recommend for or against the use of IACSs, whereas the ACR does recommend for the use of IACSs.10,41 Given the available evidence, conservative use of IACS injections remains an option for patients with refractory moderate-to-severe knee OA.
Topicals
Topical analgesics are often utilized for knee OA because of their efficacy, tolerability, low risk of adverse effects, and ease of use. They are generally recommended over oral NSAIDs in the elderly and in individuals at risk for cardiac, renal, and gastrointestinal complications from oral NSAIDs.
One review found that topical diclofenac and topical ketoprofen were comparable to the oral forms of these medications.51 One RCT concluded that topical and oral diclofenac were equally efficacious in treating knee OA symptoms, although topical diclofenac was associated with significantly fewer gastrointestinal adverse effects.52 In multiple randomized trials, topical diclofenac has shown efficacy compared to placebo.53-55 A recent systematic review and meta-analysis of RCTs concluded that topical NSAIDs were safe and effective for treating general OA compared to placebo, with diclofenac patches most effective for pain relief and piroxicam most effective for functional improvement.56
Continue to: Topical capsaicin has shown...
Topical capsaicin has shown some efficacy in treating pain associated with knee OA.57 One meta-analysis of RCTs concluded that topical NSAIDs and capsaicin may be equally efficacious for OA-associated pain relief, although none of the RCTs directly compared the two.58 The major limitation of capsaicin is a patient-reported mild-to-moderate burning sensation with application that may decrease compliance.
Emerging treatments: IA PRP & extended-release IA triamcinolone acetonide
IA platelet-rich plasma (PRP) has been investigated for efficacy in treating knee OA. PRP is thought to decrease inflammation in the joint, although its exact mechanism remains unknown.59 Multiple studies have shown some benefit of PRP in reducing pain and improving function in individuals with knee OA, but nearly all of these studies have failed to show a clear benefit of PRP over HA injections.59-63 Additionally, the authors of most of these studies mention a high risk of bias. PRP therapy is expensive and generally is not covered by insurance companies, which precludes its use for many people.
Extended-release (ER) IA triamcinolone acetonide (Zilretta) has shown some superiority to standard IA triamcinolone acetonide in both degree and duration of pain relief for knee OA.64-66 The ER version tolerability did not differ from placebo and also showed prolonged synovial presence, lower systemic absorption, and lower blood glucose elevations compared with standard triamcinolone.64-66
Surgical intervention: A last resort
Select patients with severe pain and disability from knee OA that is refractory to conservative management options should be referred for consideration of knee arthroplasty. Age, weight, OA location, and degree of OA are all considered with respect to knee arthroplasty timing and technique.
There is good evidence that arthroscopy with debridement, on the other hand, is no more effective than conservative management.67
Continue to: Unicompartmental or "partial"...
Unicompartmental or “partial” knee replacements are reserved for select cases when 1 knee compartment has a significantly higher degree of degenerative change.
CASE After reviewing the therapeutic options with your patient, you agree that she will undergo a course of physical therapy and try using topical diclofenac along with a hinged knee brace. Because of the patient’s age and co-morbidities of cardiovascular disease and mild chronic kidney disease, oral NSAIDs are avoided at this time.
The patient returns to the office in 2 months reporting mild improvement in her pain. To provide additional pain relief, an ultrasound-guided IA steroid injection is attempted. The patient also continues home physical therapy, activity modification, topical diclofenac, and use of a hinged knee brace.
She returns to the office 2 months later, reporting continued improvement in her pain. No further intervention is undertaken at this time.
CORRESPONDENCE
Ryan A. Sprouse, MD, CAQSM, West Virginia University School of Medicine–Eastern Campus, WVU Medicine Orthopaedics and Sports Medicine, 912 Somerset Boulevard, Charles Town, WV 25414; rsprouse@wvumedicine.org.
1. Wallace IJ, Worthington S,Felson DT, et al. Knee osteoarthritis has doubled in prevalence since the mid-20th century. Proc Natl Acad Sci. 2017;114:9332-9336.
2. Lawrence RC, Felson DT, Helmick CG, et al. Estimates of the prevalence of arthritis and other rheumatic conditions in the United States. Part II. Arthritis Rheum. 2008;58:26-35.
3. Vina ER, Kwoh CK. Epidemiology of osteoarthritis: literature update. Curr Opin Rheumatol. 2018;30:160-167.
4. Warner SC, Valdes AM. Genetic association studies in osteoarthritis: is it fairytale? Curr Opin Rheumatol. 2017;29:103-109.
5. Srikanth VK, Fryer JL, Zhai G, et al. A meta-analysis of sex differences prevalence, incidence and severity of osteoarthritis. Osteoarthritis Cartilage. 2005;13:769-781.
6. Palazzo C, Nguyen C, Lefevre-Colau MM, et al. Risk factors and burden of osteoarthritis. Ann Phys Rehabil Med. 2016;59:134-138.
7. Tanamas S, Hanna FS, Cicuttini FM, et al. Does knee malalignment increase the risk of development and progression of knee osteoarthritis? A systematic review. Arthritis Rheum. 2009;61:459-467.
8. Yucesoy B, Charles LE, Baker B, et al. Occupational and genetic risk factors for osteoarthritis: a review. Work. 2015;50:261-273.
9. Trojian TH, Concoff AL, Joy SM, et al. AMSSM scientific statement concerning viscosupplementation injections for knee osteoarthritis: importance for individual patient outcomes. Br J Sports Med. 2016;50:84-92.
10. Hochberg MC, Altman RD, April KT, et al. American College of Rheumatology 2012 Recommendations for the Use of Nonpharmacologic and Pharmacologic Therapies in Osteoarthritis of the Hand, Hip, and Knee. Arthritis Care Res. 2012;64:465-474.
11. Bedson J, Croft PR. The discordance between clinical and radiographic knee osteoarthritis: a systematic search and summary of the literature. BMC Musculoskelet Disord. 2008;9:116.
12. Felson DT, Anderson JJ, Naimark A, et al. Obesity and knee osteoarthritis. The Framingham Study. Ann Intern Med. 1988;109:18-24.
13. Yusuf E, Bijsterbosch J, Slagboom PE, et al. Body mass index and alignment and their interaction as risk factors for progression of knees with radiographic signs of osteoarthritis. Osteoarthritis Cartilage. 2011;19:1117-1122.
14. Niu J, Zhang YQ, Torner J, et al. Is obesity a risk factor for progressive radiographic knee osteoarthritis? Arthritis Rheum. 2009;61:329-335.
15. Messier SP, Gutekunst DJ, Davis C, et al. Weight loss reduces knee-joint loads in overweight and obese older adults with knee osteoarthritis. Arthritis Rheum. 2005;52:2026-2032.
16. Messier SP, Mihalko SL, Legault C, et al. Effects of intensive diet and exercise on knee joint loads, inflammation, and clinical outcomes among overweight and obese adults with knee osteoarthritis: the IDEA randomized clinical trial. JAMA. 2013;310:1263-1273.
17. Fransen M, McConnell S, Harmer AR, et al. Exercise for osteoarthritis of the knee: a Cochrane systematic review. Br J Sports Med.
18. Kan L, Zhang J, Yang Y, et al. The effects of yoga on pain, mobility, and quality of life in patients with knee osteoarthritis: a systematic review. Evid Based Complement Alternat Med. 2016;2016:6016532.
19. Chang WD, Chen S, Lee CL, et al. The effects of tai chi chuan on improving mind-body health for knee osteoarthritis patients: a systematic review and meta-analysis. Evid Based Complement Alternat Med. 2016;2016:1813979.
20. Takacs J, Krowchuk NM, Garland SJ, et al. Dynamic balance training improves physical function in individuals with knee osteoarthritis: a pilot randomized controlled trial. Arch Phys Med Rehabil. 2017;98:1586-1593.
21. Bartels EM, Juhl CB, Christensen R, et al. Aquatic exercise for the treatment of knee and hip osteoarthritis. Cochrane Database Syst Rev. 2016;(3):CD005523.
22. Hinman RS, Heywood SE, Day AR. Aquatic physical therapy for hip and knee osteoarthritis: results of a single-blind randomized controlled trial. Phys Ther. 2007;87:32-43.
23. Tanaka R, Ozawa J, Kito N, et al. Efficacy of strengthening or aerobic exercise on pain relief in people with knee osteoarthritis: a systematic review and meta-analysis of randomized controlled trials. Clin Rehabil. 2013;27:1059-1071.
24. Knoop J, Steultjens MP, Roorda LD, et al. Improvement in upper leg muscle strength underlies beneficial effects of exercise therapy in knee osteoarthritis: secondary analysis from a randomised controlled trial. Physiotherapy. 2015;101:171-177.
25. Mat S, Tan MP, Kamaruzzaman SB, et al. Physical therapies for improving balance and reducing falls risk in osteoarthritis of the knee: a systematic review. Age Ageing. 2015;44:16-24.
26. Peeler J, Christian M, Cooper J, et al. Managing knee osteoarthritis: the effects of body weight supported physical activity on joint pain, function, and thigh muscle strength. Clin J Sport Med. 2015;25:518-523.
27. Peeler J, Ripat J. The effect of low-load exercise on joint pain, function, and activities of daily living in patients with knee osteoarthritis. Knee. 2018;25:135-145.
28. Takacs J, Anderson JE, Leiter JR, et al. Lower body positive pressure: an emerging technology in the battle against knee osteoarthritis? Clin Interv Aging. 2013;8:983-991.
29. Duivenvoorden T, Brouwer RW, van Raaij TM, et al. Braces and orthoses for treating osteoarthritis of the knee. Cochrane Database Syst Rev. 2015;(3):CD004020.
30. Gohal C, Shanmugaraj A, Tate P, et al. Effectiveness of valgus offloading knee braces in the treatment of medial compartment knee osteoarthritis: a systematic review. Sports Health. 2018;10:500-514.
31. Brouwer RW, van Raaij TM, Verhaar JA, et al. Brace treatment for osteoarthritis of the knee: a prospective randomized multi-centre trial. Osteoarthritis Cartilage. 2006;14:777-783.
32. Lee PY, Winfield TG, Harris SR, et al. Unloading knee brace is a cost-effective method to bridge and delay surgery in unicompartmental knee arthritis. BMJ Open Sport Exerc Med. 2017;2:e000195.
33. Wilson B, Rankin H, Barnes CL. Long-term results of an unloader brace in patients with unicompartmental knee osteoarthritis. Orthopedics. 2011;34:334-347.
34. Cudejko T, van der Esch M, van der Leeden M, et al. Effect of soft braces on pain and physical function in patients with knee osteoarthritis: systematic review with meta-analyses. Arch Phys Med Rehabil. 2018;99:153-163.
35. Cudejko T, van der Esch M, van den Noort JC. Decreased pain and improved dynamic knee instability mediate the beneficial effect of wearing a soft knee brace on activity limitations in persons with knee osteoarthritis. Arthritis Care Res (Hoboken). 2019;71:1036-1043.
36. Machado GC, Maher CG, Ferreira PH, et al. Efficacy and safety of paracetamol for spinal pain and osteoarthritis: systematic review and meta-analysis of randomised placebo controlled trials. BMJ. 2015;350:h1225.
37. da Costa BR, Reichenbach S, Keller N, et al. Effectiveness of non-steroidal anti-inflammatory drugs for the treatment of pain in knee and hip osteoarthritis: a network meta-analysis. Lancet. 2017;390:e21-e33.
38. Bannuru RR, Schmid CH, Kent DM, et al. Comparative effectiveness of pharmacologic interventions for knee osteoarthritis: a systematic review and network meta-analysis. Ann Intern Med. 2015;162:46-54.
39. Gregori D, Giacovelli G, Minto C, et al. Association of pharmacological treatments with long-term pain control in patients with knee osteoarthritis: a systematic review and meta-analysis. JAMA. 2018;320:2564-2579.
40. Puljak L, Marin A, Vrdoljak D, et al. Celecoxib for osteoarthritis. Cochrane Database Syst Rev. 2017;(5):CD009865.
41. Jevsevar DS. Treatment of osteoarthritis of the knee: evidence-based guideline, 2nd edition. J Am Acad Orthop Surg. 2013;9:571-576.
42. Clegg DO, Reda DJ, Harris CL, et al. Glucosamine, chondroitin sulfate, and the two in combination for painful knee osteoarthritis. N Engl J Med. 2006;354:795-808.
43. Singh JA, Noorbaloochi S, MacDonald R, et al. Chondroitin for osteoarthritis. Cochrane Database Syst Rev. 2015;(1):CD005614.
44. Yang S, Eaton CB, McAlindon TE, et al. Effects of glucosamine and chondroitin on treating knee osteoarthritis: an analysis with marginal structural models. Arthritis Rheumatol. 2015;67:714-723.
45. Ogata T, Yuki Ideno Y, Masami Akai M,et al. Effects of glucosamine in patients with osteoarthritis of the knee: a systematic review and meta-analysis. Clin Rheumatol. 2018;37:2479-2487.
46. Towheed TE, Maxwell L, Anastassiades TP, et al. Glucosamine therapy for treating osteoarthritis. Cochrane Database Syst Rev. 2009;(2):CD002946.
47. Bruyèreetal O, Cooper C, Pelletier JP, et al. A consensus statement on the European Society for Clinical and Economic Aspects of Osteoporosis and Osteoarthritis (ESCEO) algorithm for the management of knee osteoarthritis—from evidence-based medicine to the real-life setting. Semin Arthritis Rheum. 2016;45(4 suppl):S3-S11.
48. Ishijima M, Nakamura T, Shimizu K, et al. Intra-articular hyaluronic acid injection versus oral non-steroidal anti-inflammatory drug for the treatment of knee osteoarthritis: a multi-center, randomized, open-label, non-inferiority trial. Arthritis Res Ther. 2014;16:R18.
49. Juni P, Hari R, Rutjes AW, et al. Intra-articular corticosteroid for knee osteoarthritis. Cochrane Database Syst Rev. 2015;(10):CD005328.
50. McAlindon TE, LaValley MP, Harvey FW, et al. Effect of intra-articular triamcinolone vs saline on knee cartilage volume and pain in patients with knee osteoarthritis: a randomized clinical trial. JAMA. 2017;317:1967-1975.
51. Derry S, Conaghan P, Da Silva JA, et al. Topical NSAIDs for chronic musculoskeletal pain in adults. Cochrane Database Syst Rev. 2016;(4):CD007400.
52. Tugwell PS, Wells GA, Shainhouse JZ. Equivalence study of a topical diclofenac solution (pennsaid) compared with oral diclofenac in symptomatic treatment of osteoarthritis of the knee: a randomized controlled trial. J Rheumatol. 2004;31:2002-2012.
53. Wadsworth LT, Kent JD, Holt RJ. Efficacy and safety of diclofenac sodium 2% topical solution for osteoarthritis of the knee: a randomized, double-blind, vehicle-controlled, 4 week study. Curr Med Res Opin. 2016;32:241-250.
54. Roth SH, Shainhouse JZ. Efficacy and safety of a topical diclofenac solution (pennsaid) in the treatment of primary osteoarthritis of the knee: a randomized, double-blind, vehicle-controlled clinical trial. Arch Intern Med. 2004;164:2017-2023.
55. Baer PA, Thomas LM, Shainhouse Z. Treatment of osteoarthritis of the knee with a topical diclofenac solution: a randomised controlled, 6-week trial. BMC Musculoskelet Disord. 2005;6:44.
56. Zeng C, Wei J, Persson MSM, et al. Relative efficacy and safety of topical non-steroidal anti-inflammatory drugs for osteoarthritis: a systematic review and network meta-analysis of randomised controlled trials and observational studies. Br J Sports Med. 2018;52:642-650.
57. Guedes V, Castro JP, Brito I. Topical capsaicin for pain in osteoarthritis: a literature review. Reumatol Clin. 2018;14:40-45.
58. Persson MSM, Stocks J, Walsh DA, et al. The relative efficacy of topical non-steroidal anti-inflammatory drugs and capsaicin in osteoarthritis: a network meta-analysis of randomised controlled trials. Osteoarthritis Cartilage. 2018;26:1575-1582.
59. Cole BJ, Karas V, Hussey K, et al. Hyaluronic acid versus platelet-rich plasma: a prospective, double-blind randomized controlled trial comparing clinical outcomes and effects on intra-articular biology for the treatment of knee osteoarthritis. Am J Sports Med. 2017;45:339-346.
60. Laudy AB, Bakker EW, Rekers M, et al. Efficacy of platelet-rich plasma injections in osteoarthritis of the knee: a systematic review and meta-analysis. Br J Sports Med. 2015;49:657-672.
61. Han Y, Huang H, Pan J, et al. Meta-analysis comparing platelet-rich plasma vs hyaluronic acid injection in patients with knee osteoarthritis. Pain Med. 2019;20:1418-1429.
62. Filardo G, Di Matteo B, Di Martino A, et al. Platelet-rich plasma intra-articular knee injections show no superiority versus viscosupplementation: a randomized controlled trial. Am J Sports Med. 2015;43:1575-1582.
63. Di Martino A, Di Matteo B, Papio T, et al. Platelet-rich plasma versus hyaluronic acid injections for the treatment of knee osteoarthritis: results at 5 years of a double-blind, randomized controlled trial. Am J Sports Med. 2019;47:347-354.
64. Bodick N, Lufkin J, Willwerth C, et al. An intra-articular, extended-release formulation of triamcinolone acetonide prolongs and amplifies analgesic effect in patients with osteoarthritis of the knee: a randomized clinical trial. J Bone Joint Surg Am. 2015;97:877-888.
65. Conaghan PG, Cohen SB, Berenbaum F, et al. Brief report: a phase IIb trial of a novel extended-release microsphere formulation of triamcinolone acetonide for intraarticular injection in knee osteoarthritis. Arthritis Rheumatol. 2018;70:204-211.
66. Conaghan PG, Hunter DJ, Cohen SB, et al. Effects of a single intra-articular injection of a microsphere formulation of triamcinolone acetonide on knee osteoarthritis pain: a double-blinded, randomized, placebo-controlled, multinational study. J Bone Jt Surg Am. 2018;100:666–677.
67. Thorlund JB, Juhl CB, Roos EM, et al. Arthroscopic surgery for degenerative knee: systematic review and meta-analysis of benefits and harms. BMJ. 2015;350:h2747.
1. Wallace IJ, Worthington S,Felson DT, et al. Knee osteoarthritis has doubled in prevalence since the mid-20th century. Proc Natl Acad Sci. 2017;114:9332-9336.
2. Lawrence RC, Felson DT, Helmick CG, et al. Estimates of the prevalence of arthritis and other rheumatic conditions in the United States. Part II. Arthritis Rheum. 2008;58:26-35.
3. Vina ER, Kwoh CK. Epidemiology of osteoarthritis: literature update. Curr Opin Rheumatol. 2018;30:160-167.
4. Warner SC, Valdes AM. Genetic association studies in osteoarthritis: is it fairytale? Curr Opin Rheumatol. 2017;29:103-109.
5. Srikanth VK, Fryer JL, Zhai G, et al. A meta-analysis of sex differences prevalence, incidence and severity of osteoarthritis. Osteoarthritis Cartilage. 2005;13:769-781.
6. Palazzo C, Nguyen C, Lefevre-Colau MM, et al. Risk factors and burden of osteoarthritis. Ann Phys Rehabil Med. 2016;59:134-138.
7. Tanamas S, Hanna FS, Cicuttini FM, et al. Does knee malalignment increase the risk of development and progression of knee osteoarthritis? A systematic review. Arthritis Rheum. 2009;61:459-467.
8. Yucesoy B, Charles LE, Baker B, et al. Occupational and genetic risk factors for osteoarthritis: a review. Work. 2015;50:261-273.
9. Trojian TH, Concoff AL, Joy SM, et al. AMSSM scientific statement concerning viscosupplementation injections for knee osteoarthritis: importance for individual patient outcomes. Br J Sports Med. 2016;50:84-92.
10. Hochberg MC, Altman RD, April KT, et al. American College of Rheumatology 2012 Recommendations for the Use of Nonpharmacologic and Pharmacologic Therapies in Osteoarthritis of the Hand, Hip, and Knee. Arthritis Care Res. 2012;64:465-474.
11. Bedson J, Croft PR. The discordance between clinical and radiographic knee osteoarthritis: a systematic search and summary of the literature. BMC Musculoskelet Disord. 2008;9:116.
12. Felson DT, Anderson JJ, Naimark A, et al. Obesity and knee osteoarthritis. The Framingham Study. Ann Intern Med. 1988;109:18-24.
13. Yusuf E, Bijsterbosch J, Slagboom PE, et al. Body mass index and alignment and their interaction as risk factors for progression of knees with radiographic signs of osteoarthritis. Osteoarthritis Cartilage. 2011;19:1117-1122.
14. Niu J, Zhang YQ, Torner J, et al. Is obesity a risk factor for progressive radiographic knee osteoarthritis? Arthritis Rheum. 2009;61:329-335.
15. Messier SP, Gutekunst DJ, Davis C, et al. Weight loss reduces knee-joint loads in overweight and obese older adults with knee osteoarthritis. Arthritis Rheum. 2005;52:2026-2032.
16. Messier SP, Mihalko SL, Legault C, et al. Effects of intensive diet and exercise on knee joint loads, inflammation, and clinical outcomes among overweight and obese adults with knee osteoarthritis: the IDEA randomized clinical trial. JAMA. 2013;310:1263-1273.
17. Fransen M, McConnell S, Harmer AR, et al. Exercise for osteoarthritis of the knee: a Cochrane systematic review. Br J Sports Med.
18. Kan L, Zhang J, Yang Y, et al. The effects of yoga on pain, mobility, and quality of life in patients with knee osteoarthritis: a systematic review. Evid Based Complement Alternat Med. 2016;2016:6016532.
19. Chang WD, Chen S, Lee CL, et al. The effects of tai chi chuan on improving mind-body health for knee osteoarthritis patients: a systematic review and meta-analysis. Evid Based Complement Alternat Med. 2016;2016:1813979.
20. Takacs J, Krowchuk NM, Garland SJ, et al. Dynamic balance training improves physical function in individuals with knee osteoarthritis: a pilot randomized controlled trial. Arch Phys Med Rehabil. 2017;98:1586-1593.
21. Bartels EM, Juhl CB, Christensen R, et al. Aquatic exercise for the treatment of knee and hip osteoarthritis. Cochrane Database Syst Rev. 2016;(3):CD005523.
22. Hinman RS, Heywood SE, Day AR. Aquatic physical therapy for hip and knee osteoarthritis: results of a single-blind randomized controlled trial. Phys Ther. 2007;87:32-43.
23. Tanaka R, Ozawa J, Kito N, et al. Efficacy of strengthening or aerobic exercise on pain relief in people with knee osteoarthritis: a systematic review and meta-analysis of randomized controlled trials. Clin Rehabil. 2013;27:1059-1071.
24. Knoop J, Steultjens MP, Roorda LD, et al. Improvement in upper leg muscle strength underlies beneficial effects of exercise therapy in knee osteoarthritis: secondary analysis from a randomised controlled trial. Physiotherapy. 2015;101:171-177.
25. Mat S, Tan MP, Kamaruzzaman SB, et al. Physical therapies for improving balance and reducing falls risk in osteoarthritis of the knee: a systematic review. Age Ageing. 2015;44:16-24.
26. Peeler J, Christian M, Cooper J, et al. Managing knee osteoarthritis: the effects of body weight supported physical activity on joint pain, function, and thigh muscle strength. Clin J Sport Med. 2015;25:518-523.
27. Peeler J, Ripat J. The effect of low-load exercise on joint pain, function, and activities of daily living in patients with knee osteoarthritis. Knee. 2018;25:135-145.
28. Takacs J, Anderson JE, Leiter JR, et al. Lower body positive pressure: an emerging technology in the battle against knee osteoarthritis? Clin Interv Aging. 2013;8:983-991.
29. Duivenvoorden T, Brouwer RW, van Raaij TM, et al. Braces and orthoses for treating osteoarthritis of the knee. Cochrane Database Syst Rev. 2015;(3):CD004020.
30. Gohal C, Shanmugaraj A, Tate P, et al. Effectiveness of valgus offloading knee braces in the treatment of medial compartment knee osteoarthritis: a systematic review. Sports Health. 2018;10:500-514.
31. Brouwer RW, van Raaij TM, Verhaar JA, et al. Brace treatment for osteoarthritis of the knee: a prospective randomized multi-centre trial. Osteoarthritis Cartilage. 2006;14:777-783.
32. Lee PY, Winfield TG, Harris SR, et al. Unloading knee brace is a cost-effective method to bridge and delay surgery in unicompartmental knee arthritis. BMJ Open Sport Exerc Med. 2017;2:e000195.
33. Wilson B, Rankin H, Barnes CL. Long-term results of an unloader brace in patients with unicompartmental knee osteoarthritis. Orthopedics. 2011;34:334-347.
34. Cudejko T, van der Esch M, van der Leeden M, et al. Effect of soft braces on pain and physical function in patients with knee osteoarthritis: systematic review with meta-analyses. Arch Phys Med Rehabil. 2018;99:153-163.
35. Cudejko T, van der Esch M, van den Noort JC. Decreased pain and improved dynamic knee instability mediate the beneficial effect of wearing a soft knee brace on activity limitations in persons with knee osteoarthritis. Arthritis Care Res (Hoboken). 2019;71:1036-1043.
36. Machado GC, Maher CG, Ferreira PH, et al. Efficacy and safety of paracetamol for spinal pain and osteoarthritis: systematic review and meta-analysis of randomised placebo controlled trials. BMJ. 2015;350:h1225.
37. da Costa BR, Reichenbach S, Keller N, et al. Effectiveness of non-steroidal anti-inflammatory drugs for the treatment of pain in knee and hip osteoarthritis: a network meta-analysis. Lancet. 2017;390:e21-e33.
38. Bannuru RR, Schmid CH, Kent DM, et al. Comparative effectiveness of pharmacologic interventions for knee osteoarthritis: a systematic review and network meta-analysis. Ann Intern Med. 2015;162:46-54.
39. Gregori D, Giacovelli G, Minto C, et al. Association of pharmacological treatments with long-term pain control in patients with knee osteoarthritis: a systematic review and meta-analysis. JAMA. 2018;320:2564-2579.
40. Puljak L, Marin A, Vrdoljak D, et al. Celecoxib for osteoarthritis. Cochrane Database Syst Rev. 2017;(5):CD009865.
41. Jevsevar DS. Treatment of osteoarthritis of the knee: evidence-based guideline, 2nd edition. J Am Acad Orthop Surg. 2013;9:571-576.
42. Clegg DO, Reda DJ, Harris CL, et al. Glucosamine, chondroitin sulfate, and the two in combination for painful knee osteoarthritis. N Engl J Med. 2006;354:795-808.
43. Singh JA, Noorbaloochi S, MacDonald R, et al. Chondroitin for osteoarthritis. Cochrane Database Syst Rev. 2015;(1):CD005614.
44. Yang S, Eaton CB, McAlindon TE, et al. Effects of glucosamine and chondroitin on treating knee osteoarthritis: an analysis with marginal structural models. Arthritis Rheumatol. 2015;67:714-723.
45. Ogata T, Yuki Ideno Y, Masami Akai M,et al. Effects of glucosamine in patients with osteoarthritis of the knee: a systematic review and meta-analysis. Clin Rheumatol. 2018;37:2479-2487.
46. Towheed TE, Maxwell L, Anastassiades TP, et al. Glucosamine therapy for treating osteoarthritis. Cochrane Database Syst Rev. 2009;(2):CD002946.
47. Bruyèreetal O, Cooper C, Pelletier JP, et al. A consensus statement on the European Society for Clinical and Economic Aspects of Osteoporosis and Osteoarthritis (ESCEO) algorithm for the management of knee osteoarthritis—from evidence-based medicine to the real-life setting. Semin Arthritis Rheum. 2016;45(4 suppl):S3-S11.
48. Ishijima M, Nakamura T, Shimizu K, et al. Intra-articular hyaluronic acid injection versus oral non-steroidal anti-inflammatory drug for the treatment of knee osteoarthritis: a multi-center, randomized, open-label, non-inferiority trial. Arthritis Res Ther. 2014;16:R18.
49. Juni P, Hari R, Rutjes AW, et al. Intra-articular corticosteroid for knee osteoarthritis. Cochrane Database Syst Rev. 2015;(10):CD005328.
50. McAlindon TE, LaValley MP, Harvey FW, et al. Effect of intra-articular triamcinolone vs saline on knee cartilage volume and pain in patients with knee osteoarthritis: a randomized clinical trial. JAMA. 2017;317:1967-1975.
51. Derry S, Conaghan P, Da Silva JA, et al. Topical NSAIDs for chronic musculoskeletal pain in adults. Cochrane Database Syst Rev. 2016;(4):CD007400.
52. Tugwell PS, Wells GA, Shainhouse JZ. Equivalence study of a topical diclofenac solution (pennsaid) compared with oral diclofenac in symptomatic treatment of osteoarthritis of the knee: a randomized controlled trial. J Rheumatol. 2004;31:2002-2012.
53. Wadsworth LT, Kent JD, Holt RJ. Efficacy and safety of diclofenac sodium 2% topical solution for osteoarthritis of the knee: a randomized, double-blind, vehicle-controlled, 4 week study. Curr Med Res Opin. 2016;32:241-250.
54. Roth SH, Shainhouse JZ. Efficacy and safety of a topical diclofenac solution (pennsaid) in the treatment of primary osteoarthritis of the knee: a randomized, double-blind, vehicle-controlled clinical trial. Arch Intern Med. 2004;164:2017-2023.
55. Baer PA, Thomas LM, Shainhouse Z. Treatment of osteoarthritis of the knee with a topical diclofenac solution: a randomised controlled, 6-week trial. BMC Musculoskelet Disord. 2005;6:44.
56. Zeng C, Wei J, Persson MSM, et al. Relative efficacy and safety of topical non-steroidal anti-inflammatory drugs for osteoarthritis: a systematic review and network meta-analysis of randomised controlled trials and observational studies. Br J Sports Med. 2018;52:642-650.
57. Guedes V, Castro JP, Brito I. Topical capsaicin for pain in osteoarthritis: a literature review. Reumatol Clin. 2018;14:40-45.
58. Persson MSM, Stocks J, Walsh DA, et al. The relative efficacy of topical non-steroidal anti-inflammatory drugs and capsaicin in osteoarthritis: a network meta-analysis of randomised controlled trials. Osteoarthritis Cartilage. 2018;26:1575-1582.
59. Cole BJ, Karas V, Hussey K, et al. Hyaluronic acid versus platelet-rich plasma: a prospective, double-blind randomized controlled trial comparing clinical outcomes and effects on intra-articular biology for the treatment of knee osteoarthritis. Am J Sports Med. 2017;45:339-346.
60. Laudy AB, Bakker EW, Rekers M, et al. Efficacy of platelet-rich plasma injections in osteoarthritis of the knee: a systematic review and meta-analysis. Br J Sports Med. 2015;49:657-672.
61. Han Y, Huang H, Pan J, et al. Meta-analysis comparing platelet-rich plasma vs hyaluronic acid injection in patients with knee osteoarthritis. Pain Med. 2019;20:1418-1429.
62. Filardo G, Di Matteo B, Di Martino A, et al. Platelet-rich plasma intra-articular knee injections show no superiority versus viscosupplementation: a randomized controlled trial. Am J Sports Med. 2015;43:1575-1582.
63. Di Martino A, Di Matteo B, Papio T, et al. Platelet-rich plasma versus hyaluronic acid injections for the treatment of knee osteoarthritis: results at 5 years of a double-blind, randomized controlled trial. Am J Sports Med. 2019;47:347-354.
64. Bodick N, Lufkin J, Willwerth C, et al. An intra-articular, extended-release formulation of triamcinolone acetonide prolongs and amplifies analgesic effect in patients with osteoarthritis of the knee: a randomized clinical trial. J Bone Joint Surg Am. 2015;97:877-888.
65. Conaghan PG, Cohen SB, Berenbaum F, et al. Brief report: a phase IIb trial of a novel extended-release microsphere formulation of triamcinolone acetonide for intraarticular injection in knee osteoarthritis. Arthritis Rheumatol. 2018;70:204-211.
66. Conaghan PG, Hunter DJ, Cohen SB, et al. Effects of a single intra-articular injection of a microsphere formulation of triamcinolone acetonide on knee osteoarthritis pain: a double-blinded, randomized, placebo-controlled, multinational study. J Bone Jt Surg Am. 2018;100:666–677.
67. Thorlund JB, Juhl CB, Roos EM, et al. Arthroscopic surgery for degenerative knee: systematic review and meta-analysis of benefits and harms. BMJ. 2015;350:h2747.
PRACTICE RECOMMENDATIONS
› Treat pain from knee osteoarthritis (OA) with weight management and low-impact exercise to decrease the risk of disease progression. A
› Prescribe oral or topical nonsteroidal anti-inflammatory drugs to relieve pain from knee OA, as both forms are equally effective. B
› Recommend a medial unloading (valgus) knee brace for short-term relief of medial knee OA. B
› Consider a trial of intra-articular corticosteroids or intra-articular hyaluronic acid derivatives for short-term relief of knee OA pain. B
Strength of recommendation (SOR)
A Good-quality patient-oriented evidence
B Inconsistent or limited-quality patient-oriented evidence
C Consensus, usual practice, opinion, disease-oriented evidence, case series
Rash, muscle weakness, and confusion
The constellation of symptoms was suggestive of Lyme disease, although connective tissue disease and syphilis were also considered. Two punch biopsies were performed in the office, and erythrocyte sedimentation rate (ESR), complete blood cell count (CBC), international normalized ratio (INR), comprehensive metabolic panel (CMP), Lyme enzyme-linked immunosorbent assay (ELISA) antibody panel, and rapid plasma reagin (RPR) laboratory tests were ordered.
Immediately available laboratory results included ESR, CBC, INR, and CMP. Findings were notable for elevated INR, as well as elevated alanine aminotransferase and aspartate transaminase. The transaminitis suggested myopathy and was consistent with clinical muscle weakness. RPR testing was negative.
Because of the confusion, severity of muscle weakness, and plausibility of early encephalopathy with Lyme disease, the patient was admitted to the hospital for further work-up. Lumbar puncture was delayed until his INR was reduced, but subsequently was found to be normal. He received intravenous (IV) ceftriaxone (2 g/d) empirically for possible early disseminated disease with neurologic complications. His confusion, muscle weakness, and transaminitis rapidly improved.
His Lyme antibody panel was positive for IgM after his third day of hospitalization. A reflexive confirmatory western blot for IgG was not positive on the initial set of labs but was positive when redrawn 4 weeks after this hospitalization, confirming Lyme disease.
Lyme disease is a vector-borne disease caused by the Borrelia genus of spirochete bacteria, most commonly Borrelia burgdorferi in North America. Transmission occurs through prolonged (typically 36-48 hours) attachment of a blacklegged tick.
The disease can be divided into 3 stages:
- localized (3-30 days): erythema migrans rash and flulike illness
- early disseminated (days to weeks; seen in this patient): multiple erythema migrans rashes, early neuroborreliosis, arthritis, carditis, and rarely hepatitis and uveitis
- late disseminated (months to years): chronic Lyme arthritis, chronic neurological disorders (eg, encephalopathy, radicular pain, and chronic neuropathy).
The initial erythema migrans rash is classically red and targetoid; it expands from the site of attachment. Early disseminated patches tend to be smaller and can occur on any body part. The rash is rarely itchy or painful but may be warm to the touch or sensitive. The rash resolves spontaneously within 3 to 4 weeks of onset.
Treatment of all early and early disseminated Lyme disease typically involves a 14- to 28-day course of doxycycline (100 mg bid for adults, 2.2 mg/kg bid [maximum 100 mg bid] for children). Patients with acute neurologic disease often can be treated with doxycycline, but patients who cannot tolerate doxycycline and those with parenchymal disease such as encephalitis should receive IV therapy with ceftriaxone 2 g/d.
In this case, the patient was discharged home on a 3-week course of doxycycline 100 mg bid and cleared without further symptoms.
Text courtesy of Tristan Reynolds, DO, Maine Dartmouth Family Medicine Residency, and Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).
Lyme disease. Centers for Disease Control and Prevention Web site. https://www.cdc.gov/lyme/healthcare/index.html. Accessed September 1, 2020.
The constellation of symptoms was suggestive of Lyme disease, although connective tissue disease and syphilis were also considered. Two punch biopsies were performed in the office, and erythrocyte sedimentation rate (ESR), complete blood cell count (CBC), international normalized ratio (INR), comprehensive metabolic panel (CMP), Lyme enzyme-linked immunosorbent assay (ELISA) antibody panel, and rapid plasma reagin (RPR) laboratory tests were ordered.
Immediately available laboratory results included ESR, CBC, INR, and CMP. Findings were notable for elevated INR, as well as elevated alanine aminotransferase and aspartate transaminase. The transaminitis suggested myopathy and was consistent with clinical muscle weakness. RPR testing was negative.
Because of the confusion, severity of muscle weakness, and plausibility of early encephalopathy with Lyme disease, the patient was admitted to the hospital for further work-up. Lumbar puncture was delayed until his INR was reduced, but subsequently was found to be normal. He received intravenous (IV) ceftriaxone (2 g/d) empirically for possible early disseminated disease with neurologic complications. His confusion, muscle weakness, and transaminitis rapidly improved.
His Lyme antibody panel was positive for IgM after his third day of hospitalization. A reflexive confirmatory western blot for IgG was not positive on the initial set of labs but was positive when redrawn 4 weeks after this hospitalization, confirming Lyme disease.
Lyme disease is a vector-borne disease caused by the Borrelia genus of spirochete bacteria, most commonly Borrelia burgdorferi in North America. Transmission occurs through prolonged (typically 36-48 hours) attachment of a blacklegged tick.
The disease can be divided into 3 stages:
- localized (3-30 days): erythema migrans rash and flulike illness
- early disseminated (days to weeks; seen in this patient): multiple erythema migrans rashes, early neuroborreliosis, arthritis, carditis, and rarely hepatitis and uveitis
- late disseminated (months to years): chronic Lyme arthritis, chronic neurological disorders (eg, encephalopathy, radicular pain, and chronic neuropathy).
The initial erythema migrans rash is classically red and targetoid; it expands from the site of attachment. Early disseminated patches tend to be smaller and can occur on any body part. The rash is rarely itchy or painful but may be warm to the touch or sensitive. The rash resolves spontaneously within 3 to 4 weeks of onset.
Treatment of all early and early disseminated Lyme disease typically involves a 14- to 28-day course of doxycycline (100 mg bid for adults, 2.2 mg/kg bid [maximum 100 mg bid] for children). Patients with acute neurologic disease often can be treated with doxycycline, but patients who cannot tolerate doxycycline and those with parenchymal disease such as encephalitis should receive IV therapy with ceftriaxone 2 g/d.
In this case, the patient was discharged home on a 3-week course of doxycycline 100 mg bid and cleared without further symptoms.
Text courtesy of Tristan Reynolds, DO, Maine Dartmouth Family Medicine Residency, and Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).
The constellation of symptoms was suggestive of Lyme disease, although connective tissue disease and syphilis were also considered. Two punch biopsies were performed in the office, and erythrocyte sedimentation rate (ESR), complete blood cell count (CBC), international normalized ratio (INR), comprehensive metabolic panel (CMP), Lyme enzyme-linked immunosorbent assay (ELISA) antibody panel, and rapid plasma reagin (RPR) laboratory tests were ordered.
Immediately available laboratory results included ESR, CBC, INR, and CMP. Findings were notable for elevated INR, as well as elevated alanine aminotransferase and aspartate transaminase. The transaminitis suggested myopathy and was consistent with clinical muscle weakness. RPR testing was negative.
Because of the confusion, severity of muscle weakness, and plausibility of early encephalopathy with Lyme disease, the patient was admitted to the hospital for further work-up. Lumbar puncture was delayed until his INR was reduced, but subsequently was found to be normal. He received intravenous (IV) ceftriaxone (2 g/d) empirically for possible early disseminated disease with neurologic complications. His confusion, muscle weakness, and transaminitis rapidly improved.
His Lyme antibody panel was positive for IgM after his third day of hospitalization. A reflexive confirmatory western blot for IgG was not positive on the initial set of labs but was positive when redrawn 4 weeks after this hospitalization, confirming Lyme disease.
Lyme disease is a vector-borne disease caused by the Borrelia genus of spirochete bacteria, most commonly Borrelia burgdorferi in North America. Transmission occurs through prolonged (typically 36-48 hours) attachment of a blacklegged tick.
The disease can be divided into 3 stages:
- localized (3-30 days): erythema migrans rash and flulike illness
- early disseminated (days to weeks; seen in this patient): multiple erythema migrans rashes, early neuroborreliosis, arthritis, carditis, and rarely hepatitis and uveitis
- late disseminated (months to years): chronic Lyme arthritis, chronic neurological disorders (eg, encephalopathy, radicular pain, and chronic neuropathy).
The initial erythema migrans rash is classically red and targetoid; it expands from the site of attachment. Early disseminated patches tend to be smaller and can occur on any body part. The rash is rarely itchy or painful but may be warm to the touch or sensitive. The rash resolves spontaneously within 3 to 4 weeks of onset.
Treatment of all early and early disseminated Lyme disease typically involves a 14- to 28-day course of doxycycline (100 mg bid for adults, 2.2 mg/kg bid [maximum 100 mg bid] for children). Patients with acute neurologic disease often can be treated with doxycycline, but patients who cannot tolerate doxycycline and those with parenchymal disease such as encephalitis should receive IV therapy with ceftriaxone 2 g/d.
In this case, the patient was discharged home on a 3-week course of doxycycline 100 mg bid and cleared without further symptoms.
Text courtesy of Tristan Reynolds, DO, Maine Dartmouth Family Medicine Residency, and Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).
Lyme disease. Centers for Disease Control and Prevention Web site. https://www.cdc.gov/lyme/healthcare/index.html. Accessed September 1, 2020.
Lyme disease. Centers for Disease Control and Prevention Web site. https://www.cdc.gov/lyme/healthcare/index.html. Accessed September 1, 2020.
Chronic abdominal pain and diarrhea
A 15-year-old girl was brought to the Family Medicine Clinic in Somaliland, Africa, for evaluation of intermittent abdominal pain and watery diarrhea of 12 years’ duration. Over the previous 2 months, her symptoms had worsened and included vomiting and weight loss. She denied fever, melena, or hematemesis.
Physical examination revealed a thin female with a normal abdominal exam and numerous hyperpigmented macules on the lips, buccal mucosa, fingers, and toes (FIGURE 1). Her family reported that the black spots on her lips had been there since birth. There was no known family history of similar symptoms or black spots.
Her hemoglobin was 10 g/dL (reference range, 12–15 g/dL). A probable diagnosis was discussed with the family, and they elected to travel to India for further evaluation due to limited diagnostic resources in their location. In India, computed tomography (CT) and ultrasonography showed duodenojejunal intussusception. Upper gastrointestinal (GI) endoscopy revealed multiple polyps from the lower stomach to the jejunum of the small bowel; colonoscopy was normal.
WHAT IS YOUR DIAGNOSIS?
HOW WOULD YOU TREAT THIS PATIENT?
Diagnosis: Peutz-Jeghers syndrome
Our patient was given a diagnosis of Peutz-Jeghers syndrome (PJS) based on the characteristic pigmented mucocutaneous macules and numerous polyps in the stomach and small bowel. PJS is an autosomal dominant syndrome characterized by mucocutaneous pigmentation, polyposis of the GI tract, and increased cancer risk. The prevalence is approximately 1 in 100,000.1 Genetic testing for the STK11 gene mutation, which is found in 70% of familial cases and 30% to 67% of sporadic cases, is not required for diagnosis.1
What you’ll see. The bluish brown to black spots of PJS often are apparent at birth or in early infancy. They are most common on the lips, buccal mucosa, perioral region, palms, and soles.
The polyps may cause bleeding, anemia, and abdominal pain due to intussusception, obstruction, or infarction.2 Intussusception is the most frequent cause of morbidity in childhood for PJS patients.3,4 Recurrent attacks of abdominal pain likely result from recurring transient episodes of incomplete intussusception. The polyps usually are benign, but patients are at increased risk of GI and non-GI malignancies such as breast, pancreas, lung, and reproductive tract cancers.1 Most cancers associated with PJS occur during adulthood.2
Other possible causes of hyperpigmentation
PJS can be differentiated from other causes of hyperpigmentation by clinical presentation and/or genetic testing.
Laugier-Hunziker syndrome manifests with macular hyperpigmentation of the lips and buccal mucosa and pigmented bands on the nails in young or middle-aged adults. It is not associated with intestinal polyps.
Continue to: Cronkhite-Canada syndrome
Cronkhite-Canada syndrome consists of acral and oral pigmented macules and GI polyps as well as generalized darkening of the skin, extensive alopecia, loss of taste, and nail dystrophy.
Familial lentiginosis syndromes such as Noonan syndrome and NAME syndrome (nevi, atrial myxoma, myxoid neurofibroma, ephelides) have other systemic signs such as cardiac abnormalities, and the pigmentation is not as clearly perioral.
Albright syndrome manifests with oral pigmented macules but also is associated with precocious puberty and polyostotic fibrous dysplasia.
Addison disease may cause multiple hyperpigmented macules but has other systemic involvement; adrenocorticotropic hormone levels are elevated.
Juvenile polyposis syndrome manifests with GI polyps but is not associated with mucosal pigmentation.
Continue to: Use these 4 criteria to make the diagnosis
Use these 4 criteria to make the diagnosis
The diagnosis of PJS is made using the following criteria: (1) two or more histologically confirmed PJS polyps, (2) any number of PJS polyps and a family history of PJS, (3) characteristic mucocutaneous pigmentation and a family history of PJS, or (4) any number of PJS polyps and characteristic mucocutaneous pigmentation.2
When PJS is suspected, the entire GI tract should be investigated. The hamartomatous polyps may be found from the stomach to the anal canal, but the small bowel most commonly is involved. The polyps may occur in early childhood, with one study of 14 children reporting a median age of 4.5 years.5 Polyp biopsy will show smooth muscle arborization. When possible, those who meet clinical criteria for PJS should undergo genetic testing for a STK11 gene mutation. PJS may occur due to de novo mutations in patients with no family history.6
Long-term management involves surveillance for polyps and cancer
Screening guidelines for polyps vary. Some suggest starting screening at age 8 to 10 years with esophagogastroduodenoscopy or capsule endoscopy and if negative, colonoscopy at age 18. Others suggest starting screening at 4 to 5 years of age.5 The recommendation is to remove polyps if technically feasible.3 Surveillance for Sertoli cell tumors (sex cord stromal tumors) should be done before puberty, and evaluation of other organs at risk of malignancy should begin by the end of adolescence.
The pigmented macules do not require treatment. Macules on the lips may disappear with time, while those on the buccal mucosa persist. The lip lesions can be lightened with chemical peels or laser.
Our patient underwent laparotomy, which revealed a grossly dilated and gangrenous small bowel segment. Intussusception was not present and was thought to have spontaneously reduced. Resection and anastomosis of the affected small bowel was performed. The patient’s postoperative course was uneventful, and her diarrhea and abdominal pain resolved. We recommended follow-up in her home city with primary care and a GI specialist and explained the need for surveillance of her condition.
CORRESPONDENCE
Josette R. McMichael, MD, Department of Dermatology, Emory University, 1525 Clifton Road NE, 1st Floor, Atlanta, GA 30322; jmcmichael@emory.edu
1. Kopacova M, Tacheci I, Rejchrt S, et al. Peutz-Jeghers syndrome: diagnostic and therapeutic approach. World J Gastroenterol. 2009;15:5397-5408.
2. Beggs AD, Latchford AR, Vasen HF, et al. Peutz-Jeghers syndrome: a systematic review and recommendations for management. Gut. 2010;59:975-986.
3. van Lier MG, Mathus-Vliegen EM, Wagner A, et al. High cumulative risk of intussusception in patients with Peutz-Jeghers syndrome: time to update surveillance guidelines? Am J Gastroenterol. 2011;106:940-945.
4. Vidal I, Podevin G, Piloquet H, et al. Follow-up and surgical management of Peutz-Jeghers syndrome in children. J Pediatr Gastroenterol Nutr. 2009;48:419-425.
5. Goldstein SA, Hoffenberg EJ. Peutz-Jegher syndrome in childhood: need for updated recommendations? J Pediatr Gastroenterol Nutr. 2013;56:191-195.
6. Hernan I, Roig I, Martin B, et al. De novo germline mutation in the serine-threonine kinase STK11/LKB1 gene associated with Peutz-Jeghers syndrome. Clin Genet. 2004;66:58-62.
A 15-year-old girl was brought to the Family Medicine Clinic in Somaliland, Africa, for evaluation of intermittent abdominal pain and watery diarrhea of 12 years’ duration. Over the previous 2 months, her symptoms had worsened and included vomiting and weight loss. She denied fever, melena, or hematemesis.
Physical examination revealed a thin female with a normal abdominal exam and numerous hyperpigmented macules on the lips, buccal mucosa, fingers, and toes (FIGURE 1). Her family reported that the black spots on her lips had been there since birth. There was no known family history of similar symptoms or black spots.
Her hemoglobin was 10 g/dL (reference range, 12–15 g/dL). A probable diagnosis was discussed with the family, and they elected to travel to India for further evaluation due to limited diagnostic resources in their location. In India, computed tomography (CT) and ultrasonography showed duodenojejunal intussusception. Upper gastrointestinal (GI) endoscopy revealed multiple polyps from the lower stomach to the jejunum of the small bowel; colonoscopy was normal.
WHAT IS YOUR DIAGNOSIS?
HOW WOULD YOU TREAT THIS PATIENT?
Diagnosis: Peutz-Jeghers syndrome
Our patient was given a diagnosis of Peutz-Jeghers syndrome (PJS) based on the characteristic pigmented mucocutaneous macules and numerous polyps in the stomach and small bowel. PJS is an autosomal dominant syndrome characterized by mucocutaneous pigmentation, polyposis of the GI tract, and increased cancer risk. The prevalence is approximately 1 in 100,000.1 Genetic testing for the STK11 gene mutation, which is found in 70% of familial cases and 30% to 67% of sporadic cases, is not required for diagnosis.1
What you’ll see. The bluish brown to black spots of PJS often are apparent at birth or in early infancy. They are most common on the lips, buccal mucosa, perioral region, palms, and soles.
The polyps may cause bleeding, anemia, and abdominal pain due to intussusception, obstruction, or infarction.2 Intussusception is the most frequent cause of morbidity in childhood for PJS patients.3,4 Recurrent attacks of abdominal pain likely result from recurring transient episodes of incomplete intussusception. The polyps usually are benign, but patients are at increased risk of GI and non-GI malignancies such as breast, pancreas, lung, and reproductive tract cancers.1 Most cancers associated with PJS occur during adulthood.2
Other possible causes of hyperpigmentation
PJS can be differentiated from other causes of hyperpigmentation by clinical presentation and/or genetic testing.
Laugier-Hunziker syndrome manifests with macular hyperpigmentation of the lips and buccal mucosa and pigmented bands on the nails in young or middle-aged adults. It is not associated with intestinal polyps.
Continue to: Cronkhite-Canada syndrome
Cronkhite-Canada syndrome consists of acral and oral pigmented macules and GI polyps as well as generalized darkening of the skin, extensive alopecia, loss of taste, and nail dystrophy.
Familial lentiginosis syndromes such as Noonan syndrome and NAME syndrome (nevi, atrial myxoma, myxoid neurofibroma, ephelides) have other systemic signs such as cardiac abnormalities, and the pigmentation is not as clearly perioral.
Albright syndrome manifests with oral pigmented macules but also is associated with precocious puberty and polyostotic fibrous dysplasia.
Addison disease may cause multiple hyperpigmented macules but has other systemic involvement; adrenocorticotropic hormone levels are elevated.
Juvenile polyposis syndrome manifests with GI polyps but is not associated with mucosal pigmentation.
Continue to: Use these 4 criteria to make the diagnosis
Use these 4 criteria to make the diagnosis
The diagnosis of PJS is made using the following criteria: (1) two or more histologically confirmed PJS polyps, (2) any number of PJS polyps and a family history of PJS, (3) characteristic mucocutaneous pigmentation and a family history of PJS, or (4) any number of PJS polyps and characteristic mucocutaneous pigmentation.2
When PJS is suspected, the entire GI tract should be investigated. The hamartomatous polyps may be found from the stomach to the anal canal, but the small bowel most commonly is involved. The polyps may occur in early childhood, with one study of 14 children reporting a median age of 4.5 years.5 Polyp biopsy will show smooth muscle arborization. When possible, those who meet clinical criteria for PJS should undergo genetic testing for a STK11 gene mutation. PJS may occur due to de novo mutations in patients with no family history.6
Long-term management involves surveillance for polyps and cancer
Screening guidelines for polyps vary. Some suggest starting screening at age 8 to 10 years with esophagogastroduodenoscopy or capsule endoscopy and if negative, colonoscopy at age 18. Others suggest starting screening at 4 to 5 years of age.5 The recommendation is to remove polyps if technically feasible.3 Surveillance for Sertoli cell tumors (sex cord stromal tumors) should be done before puberty, and evaluation of other organs at risk of malignancy should begin by the end of adolescence.
The pigmented macules do not require treatment. Macules on the lips may disappear with time, while those on the buccal mucosa persist. The lip lesions can be lightened with chemical peels or laser.
Our patient underwent laparotomy, which revealed a grossly dilated and gangrenous small bowel segment. Intussusception was not present and was thought to have spontaneously reduced. Resection and anastomosis of the affected small bowel was performed. The patient’s postoperative course was uneventful, and her diarrhea and abdominal pain resolved. We recommended follow-up in her home city with primary care and a GI specialist and explained the need for surveillance of her condition.
CORRESPONDENCE
Josette R. McMichael, MD, Department of Dermatology, Emory University, 1525 Clifton Road NE, 1st Floor, Atlanta, GA 30322; jmcmichael@emory.edu
A 15-year-old girl was brought to the Family Medicine Clinic in Somaliland, Africa, for evaluation of intermittent abdominal pain and watery diarrhea of 12 years’ duration. Over the previous 2 months, her symptoms had worsened and included vomiting and weight loss. She denied fever, melena, or hematemesis.
Physical examination revealed a thin female with a normal abdominal exam and numerous hyperpigmented macules on the lips, buccal mucosa, fingers, and toes (FIGURE 1). Her family reported that the black spots on her lips had been there since birth. There was no known family history of similar symptoms or black spots.
Her hemoglobin was 10 g/dL (reference range, 12–15 g/dL). A probable diagnosis was discussed with the family, and they elected to travel to India for further evaluation due to limited diagnostic resources in their location. In India, computed tomography (CT) and ultrasonography showed duodenojejunal intussusception. Upper gastrointestinal (GI) endoscopy revealed multiple polyps from the lower stomach to the jejunum of the small bowel; colonoscopy was normal.
WHAT IS YOUR DIAGNOSIS?
HOW WOULD YOU TREAT THIS PATIENT?
Diagnosis: Peutz-Jeghers syndrome
Our patient was given a diagnosis of Peutz-Jeghers syndrome (PJS) based on the characteristic pigmented mucocutaneous macules and numerous polyps in the stomach and small bowel. PJS is an autosomal dominant syndrome characterized by mucocutaneous pigmentation, polyposis of the GI tract, and increased cancer risk. The prevalence is approximately 1 in 100,000.1 Genetic testing for the STK11 gene mutation, which is found in 70% of familial cases and 30% to 67% of sporadic cases, is not required for diagnosis.1
What you’ll see. The bluish brown to black spots of PJS often are apparent at birth or in early infancy. They are most common on the lips, buccal mucosa, perioral region, palms, and soles.
The polyps may cause bleeding, anemia, and abdominal pain due to intussusception, obstruction, or infarction.2 Intussusception is the most frequent cause of morbidity in childhood for PJS patients.3,4 Recurrent attacks of abdominal pain likely result from recurring transient episodes of incomplete intussusception. The polyps usually are benign, but patients are at increased risk of GI and non-GI malignancies such as breast, pancreas, lung, and reproductive tract cancers.1 Most cancers associated with PJS occur during adulthood.2
Other possible causes of hyperpigmentation
PJS can be differentiated from other causes of hyperpigmentation by clinical presentation and/or genetic testing.
Laugier-Hunziker syndrome manifests with macular hyperpigmentation of the lips and buccal mucosa and pigmented bands on the nails in young or middle-aged adults. It is not associated with intestinal polyps.
Continue to: Cronkhite-Canada syndrome
Cronkhite-Canada syndrome consists of acral and oral pigmented macules and GI polyps as well as generalized darkening of the skin, extensive alopecia, loss of taste, and nail dystrophy.
Familial lentiginosis syndromes such as Noonan syndrome and NAME syndrome (nevi, atrial myxoma, myxoid neurofibroma, ephelides) have other systemic signs such as cardiac abnormalities, and the pigmentation is not as clearly perioral.
Albright syndrome manifests with oral pigmented macules but also is associated with precocious puberty and polyostotic fibrous dysplasia.
Addison disease may cause multiple hyperpigmented macules but has other systemic involvement; adrenocorticotropic hormone levels are elevated.
Juvenile polyposis syndrome manifests with GI polyps but is not associated with mucosal pigmentation.
Continue to: Use these 4 criteria to make the diagnosis
Use these 4 criteria to make the diagnosis
The diagnosis of PJS is made using the following criteria: (1) two or more histologically confirmed PJS polyps, (2) any number of PJS polyps and a family history of PJS, (3) characteristic mucocutaneous pigmentation and a family history of PJS, or (4) any number of PJS polyps and characteristic mucocutaneous pigmentation.2
When PJS is suspected, the entire GI tract should be investigated. The hamartomatous polyps may be found from the stomach to the anal canal, but the small bowel most commonly is involved. The polyps may occur in early childhood, with one study of 14 children reporting a median age of 4.5 years.5 Polyp biopsy will show smooth muscle arborization. When possible, those who meet clinical criteria for PJS should undergo genetic testing for a STK11 gene mutation. PJS may occur due to de novo mutations in patients with no family history.6
Long-term management involves surveillance for polyps and cancer
Screening guidelines for polyps vary. Some suggest starting screening at age 8 to 10 years with esophagogastroduodenoscopy or capsule endoscopy and if negative, colonoscopy at age 18. Others suggest starting screening at 4 to 5 years of age.5 The recommendation is to remove polyps if technically feasible.3 Surveillance for Sertoli cell tumors (sex cord stromal tumors) should be done before puberty, and evaluation of other organs at risk of malignancy should begin by the end of adolescence.
The pigmented macules do not require treatment. Macules on the lips may disappear with time, while those on the buccal mucosa persist. The lip lesions can be lightened with chemical peels or laser.
Our patient underwent laparotomy, which revealed a grossly dilated and gangrenous small bowel segment. Intussusception was not present and was thought to have spontaneously reduced. Resection and anastomosis of the affected small bowel was performed. The patient’s postoperative course was uneventful, and her diarrhea and abdominal pain resolved. We recommended follow-up in her home city with primary care and a GI specialist and explained the need for surveillance of her condition.
CORRESPONDENCE
Josette R. McMichael, MD, Department of Dermatology, Emory University, 1525 Clifton Road NE, 1st Floor, Atlanta, GA 30322; jmcmichael@emory.edu
1. Kopacova M, Tacheci I, Rejchrt S, et al. Peutz-Jeghers syndrome: diagnostic and therapeutic approach. World J Gastroenterol. 2009;15:5397-5408.
2. Beggs AD, Latchford AR, Vasen HF, et al. Peutz-Jeghers syndrome: a systematic review and recommendations for management. Gut. 2010;59:975-986.
3. van Lier MG, Mathus-Vliegen EM, Wagner A, et al. High cumulative risk of intussusception in patients with Peutz-Jeghers syndrome: time to update surveillance guidelines? Am J Gastroenterol. 2011;106:940-945.
4. Vidal I, Podevin G, Piloquet H, et al. Follow-up and surgical management of Peutz-Jeghers syndrome in children. J Pediatr Gastroenterol Nutr. 2009;48:419-425.
5. Goldstein SA, Hoffenberg EJ. Peutz-Jegher syndrome in childhood: need for updated recommendations? J Pediatr Gastroenterol Nutr. 2013;56:191-195.
6. Hernan I, Roig I, Martin B, et al. De novo germline mutation in the serine-threonine kinase STK11/LKB1 gene associated with Peutz-Jeghers syndrome. Clin Genet. 2004;66:58-62.
1. Kopacova M, Tacheci I, Rejchrt S, et al. Peutz-Jeghers syndrome: diagnostic and therapeutic approach. World J Gastroenterol. 2009;15:5397-5408.
2. Beggs AD, Latchford AR, Vasen HF, et al. Peutz-Jeghers syndrome: a systematic review and recommendations for management. Gut. 2010;59:975-986.
3. van Lier MG, Mathus-Vliegen EM, Wagner A, et al. High cumulative risk of intussusception in patients with Peutz-Jeghers syndrome: time to update surveillance guidelines? Am J Gastroenterol. 2011;106:940-945.
4. Vidal I, Podevin G, Piloquet H, et al. Follow-up and surgical management of Peutz-Jeghers syndrome in children. J Pediatr Gastroenterol Nutr. 2009;48:419-425.
5. Goldstein SA, Hoffenberg EJ. Peutz-Jegher syndrome in childhood: need for updated recommendations? J Pediatr Gastroenterol Nutr. 2013;56:191-195.
6. Hernan I, Roig I, Martin B, et al. De novo germline mutation in the serine-threonine kinase STK11/LKB1 gene associated with Peutz-Jeghers syndrome. Clin Genet. 2004;66:58-62.
We are all in this together: Lessons learned on a COVID-19 unit
Like most family medicine residencies, our teaching nursing home was struck with a COVID-19 outbreak. Within 10 days, I was the sole physician responsible for 15 patients with varying degrees of illness, quarantined behind the fire doors of a wing of a Memory Support Unit. My daily work there over the course of the next month prompted me to reflect on some of the core principles of family medicine, and health care, that are vital to effective patient care during a pandemic. My experience provided the following reminders:
Work as a team. Gowned, gloved, and masked behind the fire doors, our world shrank to our patients and a 4-person team comprised of a nurse, 2 nursing assistants, and me. For the first time in the 10+ years I’ve worked at that facility, I actually asked for and memorized the names of everyone I was working with that day. Without an intercom or other telecommunications system, it became important for me to be able to call for my team members by name for immediate help. We had to depend on one another to make sure all patients were hydrated and fed, to avert falls whenever possible, to intervene early when dementia-associated behaviors were escalating, and to recognize when patients were crashing.
We also had to depend on each other to ensure that our personal protective equipment remained properly placed, to combat the psychological sense of isolation that quarantine environments engender, and to placate a gnawing undercurrent of unease while working around a potentially deadly pathogen.
Develop clinical routines. Having listened to other medical directors whose nursing homes were affected by the pandemic earlier than we were, and hearing about potentially avoidable complications, we developed clinical routines. This began with identifying any patients with diabetes whose poor appetites while acutely ill could send them into hypoglycemia. We devised a daily clinical report sheet that included vital signs, date of positive COVID-19 test, global clinical status, and advance directives. Unlike the usual mode of working almost in parallel, I began my workday with a “sign-out” from the nurse, then started examining each patient.
Under the strain of this unusual environment and novel circumstances, we communicated more and more often. This allowed us to quickly recognize and communicate emerging changes in the clinical status of a patient by sharing our observations of subtle, nonspecific “sub-threshold” indicators.
Clarify the goals of care. Since most of the patients in the COVID-19 unit were under the long-term care of other attending physicians, it was important for me to understand the wishes of the patient or surrogate decision maker, should life-threatening complications occur. While all affected patients were long-term residents of a memory support unit, some had full-code advance directives. I quickly realized that what was first necessary was to develop rapport and trust with the families who didn’t know me, then discuss goals of care, and finally assure that the advance directives were in congruence with their stated goals. What helped families gain trust in me was knowing that I was seeing their loved one daily, that I was committed to helping the patient survive this infection, and that I was willing to come back to the facility if a crisis occurred—even at night, if necessary.
Appreciate the daily work of team members. One of my greatest worries was dehydration. When elders were acutely ill and eating and drinking poorly, I would assist with feeding and offering liquids. I quickly came to appreciate how complex and subtle this seemingly mundane task can be. Learning the proper pace and portion size, even choosing the right conversation topic and tone, could make the difference between a patient “shutting down” and refusing all nourishment and successfully drinking a 360-cc cup of a high-nutrient shake.
Continue to: In the disrupted routines...
In the disrupted routines and altered physical environments of the COVID-19 unit, the psychological and behavioral complications of dementia intensified for some patients. I observed first-hand the great patience, kindness, and finesse that nurses and nursing assistants display in their efforts to de-escalate and prevent disruptive behaviors.
Empathize with (and appreciate) families. Families tearfully reminded me that they had been suffering from the absence of contact with their loved ones for months; COVID-19 added to that trauma for many of them. They talked about the missed graduations, birthdays, and other precious times together that were lost because of the quarantine.
Families also prevented me from making mistakes. When I ordered nitrofurantoin for a patient with a urinary tract infection, her son called me and respectfully requested I “just check and make sure” it would not cause a problem, given her G6PD deficiency. He prevented me from prescribing an antibiotic contraindicated in that condition.
Bring forward the lessons learned. The COVID-19 outbreak has passed through our nursing home—at least for now. I perceive a subtle shift in how we continue to interact with one another. Behind the masks, we make a little more eye contact; we more often address each other by name; and we acknowledge a greater mutual respect.
The shared experience of COVID-19 has brought us all a little closer together, and in the end, our patients have benefitted.
Like most family medicine residencies, our teaching nursing home was struck with a COVID-19 outbreak. Within 10 days, I was the sole physician responsible for 15 patients with varying degrees of illness, quarantined behind the fire doors of a wing of a Memory Support Unit. My daily work there over the course of the next month prompted me to reflect on some of the core principles of family medicine, and health care, that are vital to effective patient care during a pandemic. My experience provided the following reminders:
Work as a team. Gowned, gloved, and masked behind the fire doors, our world shrank to our patients and a 4-person team comprised of a nurse, 2 nursing assistants, and me. For the first time in the 10+ years I’ve worked at that facility, I actually asked for and memorized the names of everyone I was working with that day. Without an intercom or other telecommunications system, it became important for me to be able to call for my team members by name for immediate help. We had to depend on one another to make sure all patients were hydrated and fed, to avert falls whenever possible, to intervene early when dementia-associated behaviors were escalating, and to recognize when patients were crashing.
We also had to depend on each other to ensure that our personal protective equipment remained properly placed, to combat the psychological sense of isolation that quarantine environments engender, and to placate a gnawing undercurrent of unease while working around a potentially deadly pathogen.
Develop clinical routines. Having listened to other medical directors whose nursing homes were affected by the pandemic earlier than we were, and hearing about potentially avoidable complications, we developed clinical routines. This began with identifying any patients with diabetes whose poor appetites while acutely ill could send them into hypoglycemia. We devised a daily clinical report sheet that included vital signs, date of positive COVID-19 test, global clinical status, and advance directives. Unlike the usual mode of working almost in parallel, I began my workday with a “sign-out” from the nurse, then started examining each patient.
Under the strain of this unusual environment and novel circumstances, we communicated more and more often. This allowed us to quickly recognize and communicate emerging changes in the clinical status of a patient by sharing our observations of subtle, nonspecific “sub-threshold” indicators.
Clarify the goals of care. Since most of the patients in the COVID-19 unit were under the long-term care of other attending physicians, it was important for me to understand the wishes of the patient or surrogate decision maker, should life-threatening complications occur. While all affected patients were long-term residents of a memory support unit, some had full-code advance directives. I quickly realized that what was first necessary was to develop rapport and trust with the families who didn’t know me, then discuss goals of care, and finally assure that the advance directives were in congruence with their stated goals. What helped families gain trust in me was knowing that I was seeing their loved one daily, that I was committed to helping the patient survive this infection, and that I was willing to come back to the facility if a crisis occurred—even at night, if necessary.
Appreciate the daily work of team members. One of my greatest worries was dehydration. When elders were acutely ill and eating and drinking poorly, I would assist with feeding and offering liquids. I quickly came to appreciate how complex and subtle this seemingly mundane task can be. Learning the proper pace and portion size, even choosing the right conversation topic and tone, could make the difference between a patient “shutting down” and refusing all nourishment and successfully drinking a 360-cc cup of a high-nutrient shake.
Continue to: In the disrupted routines...
In the disrupted routines and altered physical environments of the COVID-19 unit, the psychological and behavioral complications of dementia intensified for some patients. I observed first-hand the great patience, kindness, and finesse that nurses and nursing assistants display in their efforts to de-escalate and prevent disruptive behaviors.
Empathize with (and appreciate) families. Families tearfully reminded me that they had been suffering from the absence of contact with their loved ones for months; COVID-19 added to that trauma for many of them. They talked about the missed graduations, birthdays, and other precious times together that were lost because of the quarantine.
Families also prevented me from making mistakes. When I ordered nitrofurantoin for a patient with a urinary tract infection, her son called me and respectfully requested I “just check and make sure” it would not cause a problem, given her G6PD deficiency. He prevented me from prescribing an antibiotic contraindicated in that condition.
Bring forward the lessons learned. The COVID-19 outbreak has passed through our nursing home—at least for now. I perceive a subtle shift in how we continue to interact with one another. Behind the masks, we make a little more eye contact; we more often address each other by name; and we acknowledge a greater mutual respect.
The shared experience of COVID-19 has brought us all a little closer together, and in the end, our patients have benefitted.
Like most family medicine residencies, our teaching nursing home was struck with a COVID-19 outbreak. Within 10 days, I was the sole physician responsible for 15 patients with varying degrees of illness, quarantined behind the fire doors of a wing of a Memory Support Unit. My daily work there over the course of the next month prompted me to reflect on some of the core principles of family medicine, and health care, that are vital to effective patient care during a pandemic. My experience provided the following reminders:
Work as a team. Gowned, gloved, and masked behind the fire doors, our world shrank to our patients and a 4-person team comprised of a nurse, 2 nursing assistants, and me. For the first time in the 10+ years I’ve worked at that facility, I actually asked for and memorized the names of everyone I was working with that day. Without an intercom or other telecommunications system, it became important for me to be able to call for my team members by name for immediate help. We had to depend on one another to make sure all patients were hydrated and fed, to avert falls whenever possible, to intervene early when dementia-associated behaviors were escalating, and to recognize when patients were crashing.
We also had to depend on each other to ensure that our personal protective equipment remained properly placed, to combat the psychological sense of isolation that quarantine environments engender, and to placate a gnawing undercurrent of unease while working around a potentially deadly pathogen.
Develop clinical routines. Having listened to other medical directors whose nursing homes were affected by the pandemic earlier than we were, and hearing about potentially avoidable complications, we developed clinical routines. This began with identifying any patients with diabetes whose poor appetites while acutely ill could send them into hypoglycemia. We devised a daily clinical report sheet that included vital signs, date of positive COVID-19 test, global clinical status, and advance directives. Unlike the usual mode of working almost in parallel, I began my workday with a “sign-out” from the nurse, then started examining each patient.
Under the strain of this unusual environment and novel circumstances, we communicated more and more often. This allowed us to quickly recognize and communicate emerging changes in the clinical status of a patient by sharing our observations of subtle, nonspecific “sub-threshold” indicators.
Clarify the goals of care. Since most of the patients in the COVID-19 unit were under the long-term care of other attending physicians, it was important for me to understand the wishes of the patient or surrogate decision maker, should life-threatening complications occur. While all affected patients were long-term residents of a memory support unit, some had full-code advance directives. I quickly realized that what was first necessary was to develop rapport and trust with the families who didn’t know me, then discuss goals of care, and finally assure that the advance directives were in congruence with their stated goals. What helped families gain trust in me was knowing that I was seeing their loved one daily, that I was committed to helping the patient survive this infection, and that I was willing to come back to the facility if a crisis occurred—even at night, if necessary.
Appreciate the daily work of team members. One of my greatest worries was dehydration. When elders were acutely ill and eating and drinking poorly, I would assist with feeding and offering liquids. I quickly came to appreciate how complex and subtle this seemingly mundane task can be. Learning the proper pace and portion size, even choosing the right conversation topic and tone, could make the difference between a patient “shutting down” and refusing all nourishment and successfully drinking a 360-cc cup of a high-nutrient shake.
Continue to: In the disrupted routines...
In the disrupted routines and altered physical environments of the COVID-19 unit, the psychological and behavioral complications of dementia intensified for some patients. I observed first-hand the great patience, kindness, and finesse that nurses and nursing assistants display in their efforts to de-escalate and prevent disruptive behaviors.
Empathize with (and appreciate) families. Families tearfully reminded me that they had been suffering from the absence of contact with their loved ones for months; COVID-19 added to that trauma for many of them. They talked about the missed graduations, birthdays, and other precious times together that were lost because of the quarantine.
Families also prevented me from making mistakes. When I ordered nitrofurantoin for a patient with a urinary tract infection, her son called me and respectfully requested I “just check and make sure” it would not cause a problem, given her G6PD deficiency. He prevented me from prescribing an antibiotic contraindicated in that condition.
Bring forward the lessons learned. The COVID-19 outbreak has passed through our nursing home—at least for now. I perceive a subtle shift in how we continue to interact with one another. Behind the masks, we make a little more eye contact; we more often address each other by name; and we acknowledge a greater mutual respect.
The shared experience of COVID-19 has brought us all a little closer together, and in the end, our patients have benefitted.
45-year-old man • fever • generalized rash • recent history of calcaneal osteomyelitis • Dx?
THE CASE
A 45-year-old man was admitted to the hospital with a fever and generalized rash. For the previous 2 weeks, he had been treated at a skilled nursing facility with IV vancomycin and cefepime for left calcaneal osteomyelitis. He reported that the rash was pruritic and started 2 days prior to hospital admission.
His past medical history was significant for type 2 diabetes mellitus and polysubstance drug abuse. Medical and travel history were otherwise unremarkable. The patient was taking the following medications at the time of presentation: hydrocodone-acetaminophen, cyclobenzaprine, melatonin, and metformin.
Initial vital signs included a temperature of 102.9°F; respiratory rate, 22 breaths/min; heart rate, 97 beats/min; and blood pressure, 89/50 mm Hg. Physical exam was notable for left anterior cervical and axillary lymphadenopathy. The patient had no facial edema, but he did have a diffuse, morbilliform rash on his bilateral upper and lower extremities, encompassing about 54% of his body surface area (FIGURE 1).
Laboratory studies revealed a white blood cell count of 4.7/mcL, with 3.4% eosinophils and 10.9% monocytes; an erythrocyte sedimentation rate of 60 mm/h; and a C-reactive protein level of 1 mg/dL. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels were both elevated (AST: 95 U/L [normal range, 8 - 48 U/L]; ALT: 115 U/L [normal range: 7 - 55 U/L]). A chest x-ray was obtained and showed new lung infiltrates (FIGURE 2).
Linezolid and meropenem were initiated for a presumed health care–associated pneumonia, and a sepsis work-up was initiated.
THE DIAGNOSIS
The patient’s rash and pruritus worsened after meropenem was introduced. A hepatitis panel was nonreactive except for prior hepatitis A exposure. Ultrasound of the liver and spleen was normal. Investigation of pneumonia pathogens including Legionella, Streptococcus, Mycoplasma, and Chlamydia psittaci did not reveal any causative agents. A skin biopsy revealed perivascular neutrophilic dermatitis with dyskeratosis.
The patient was diagnosed with DRESS (drug reaction with eosinophilia and systemic symptoms) syndrome based on his fever, worsening morbilliform rash, lymphadenopathy, and elevated liver transaminase levels. Although he did not have marked eosinophilia, atypical lymphocytes were present. Serologies for human herpesvirus (HHV), Epstein-Barr virus (EBV), and cytomegalovirus (CMV) were all unremarkable.
Continue to: During discussions...
During discussions with an infectious disease specialist, it was concluded that the patient’s DRESS syndrome was likely secondary to beta-lactam antibiotics. The patient had been receiving cefepime prior to hospitalization. Meropenem was discontinued and aztreonam was started, with continued linezolid. This patient did not have a reactivation of a herpesvirus (HHV-6, HHV-7, EBV, or CMV), which has been previously reported in cases of DRESS syndrome.
DISCUSSION
DRESS syndrome is a challenging diagnosis to make due to the multiplicity of presenting symptoms. Skin rash, lymphadenopathy, hepatic involvement, and hypereosinophilia are characteristic findings.1 Accurate diagnosis reduces fatal disease outcomes, which are estimated to occur in 5%-10% of cases.1,2
Causative agents. DRESS syndrome typically occurs 2 to 6 weeks after the introduction of the causative agent, commonly an aromatic anticonvulsant or antibiotic.3 The incidence of DRESS syndrome in patients using carbamazepine and phenytoin is estimated to be 1 to 5 per 10,000 patients. The incidence of DRESS syndrome in patients using antibiotics is unknown. Frequently, the inducing antibiotic is a beta-lactam, as in this case.4,5
The pathogenesis of DRESS syndrome is not well understood, although there appears to be an immune-mediated reaction that occurs in certain patients after viral reactivation, particularly with herpesviruses. In vitro studies have demonstrated that the culprit drug is able to induce viral reactivation leading to T-lymphocyte response and systemic inflammation, which occurs in multiple organs.6,7 Reported long-term sequelae of DRESS syndrome include immune-mediated diseases such as thyroiditis and type 1 diabetes. In addition, it is hypothesized that there is a genetic predisposition involving human leukocyte antigens that increases the likelihood that individuals will develop DRESS syndrome.5,8
Diagnosis. The
Continue to: Treatment
Treatment is aimed at stopping the causative agent and starting moderate- to high-dose systemic corticosteroids (from 0.5 to 2 mg/kg/d). If symptoms continue to progress, cyclosporine can be used. N-acetylcysteine may also be beneficial due to its ability to neutralize drug metabolites that can stimulate T-cell response.7 There has not been sufficient evidence to suggest that antiviral medication should be initiated.1,7
Our patient was treated with 2 mg/kg/d of prednisone, along with triamcinolone cream, diphenhydramine, and N-acetylcysteine. His rash improved dramatically during his hospital stay and at the subsequent 1-month follow-up was completely resolved.
THE TAKEAWAY
DRESS syndrome should be suspected in patients presenting with fever, rash, lymphadenopathy, pulmonary infiltrates, and liver involvement after initiation of drugs commonly associated with this syndrome. Our case reinforces previous clinical evidence that beta-lactam antibiotics are a common cause of DRESS syndrome; patients taking these medications should be closely monitored. Cross-reactions are frequent, and it is imperative that patients avoid related drugs to prevent recurrence. Although glucocorticoids are the mainstay of treatment, further studies are needed to assess the benefits of N-acetylcysteine.
CORRESPONDENCE
W. Jacob Cobb, MD, JPS Health Network, 1500 South Main Street, Fort Worth, TX, 76104; w.jacob.cobb@gmail.com
1. Cacoub P, Musette P, Descamps V, et al. The DRESS syndrome: a literature review. Am J Med. 2011;124:588-597.
2. Chen Y, Chiu H, Chu C. Drug reaction with eosinophilia and systemic symptoms: a retrospective study of 60 cases. Arch Dermatol. 2010;146:1373-1379.
3. Jeung Y-J, Lee J-Y, Oh M-J, et al. Comparison of the causes and clinical features of drug rash with eosinophilia and systemic symptoms and Stevens-Johnson syndrome. Allergy Asthma Immunol Res. 2010;2:123–126.
4. Shiohara T, Iijima M, Ikezawa Z, et al. The diagnosis of a DRESS syndrome has been sufficiently established on the basis of typical clinical features and viral reactivations [commentary]. Br J Dermatol. 2006;156:1083-1084.
5. Ben-Said B, Arnaud-Butel S, Rozières A, et al. Allergic delayed drug hypersensitivity is more frequently diagnosed in drug reaction, eosinophilia and systemic symptoms (DRESS) syndrome than in exanthema induced by beta lactam antibiotics. J Dermatol Sci. 2015;80:71-74.
6. Schrijvers R, Gilissen L, Chiriac AM, et al. Pathogenesis and diagnosis of delayed-type drug hypersensitivity reactions, from bedside to bench and back. Clin Transl Allergy. 2015;5:31.
7. Moling O, Tappeiner L, Piccin A, et al. Treatment of DIHS/DRESS syndrome with combined N-acetylcysteine, prednisone and valganciclovir—a hypothesis. Med Sci Monit. 2012;18:CS57-CS62.
8. Cardoso CS, Vieira AM, Oliveira AP. DRESS syndrome: a case report and literature review. BMJ Case Rep. 2011;2011:bcr0220113898.
9. Kardaun SH, Sekula P, Valeyrie-Allanore L, et al. Drug reaction with eosinophilia and systemic symptoms (DRESS): an original multisystem adverse drug reaction. Results from the prospective RegiSCAR study. Br J Dermatol. 2013;169:1071-1080.
10. Bernard L, Eichenfield L. Drug-associated rashes. In: Zaoutis L, Chiang V, eds. Comprehensive Pediatric Hospital Medicine. Philadelphia, PA: Elsevier; 2010: 1005-1011.
11. Grover S. Severe cutaneous adverse reactions. Indian J Dermatol Venereol Leprol. 2011;77:3-6.
THE CASE
A 45-year-old man was admitted to the hospital with a fever and generalized rash. For the previous 2 weeks, he had been treated at a skilled nursing facility with IV vancomycin and cefepime for left calcaneal osteomyelitis. He reported that the rash was pruritic and started 2 days prior to hospital admission.
His past medical history was significant for type 2 diabetes mellitus and polysubstance drug abuse. Medical and travel history were otherwise unremarkable. The patient was taking the following medications at the time of presentation: hydrocodone-acetaminophen, cyclobenzaprine, melatonin, and metformin.
Initial vital signs included a temperature of 102.9°F; respiratory rate, 22 breaths/min; heart rate, 97 beats/min; and blood pressure, 89/50 mm Hg. Physical exam was notable for left anterior cervical and axillary lymphadenopathy. The patient had no facial edema, but he did have a diffuse, morbilliform rash on his bilateral upper and lower extremities, encompassing about 54% of his body surface area (FIGURE 1).
Laboratory studies revealed a white blood cell count of 4.7/mcL, with 3.4% eosinophils and 10.9% monocytes; an erythrocyte sedimentation rate of 60 mm/h; and a C-reactive protein level of 1 mg/dL. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels were both elevated (AST: 95 U/L [normal range, 8 - 48 U/L]; ALT: 115 U/L [normal range: 7 - 55 U/L]). A chest x-ray was obtained and showed new lung infiltrates (FIGURE 2).
Linezolid and meropenem were initiated for a presumed health care–associated pneumonia, and a sepsis work-up was initiated.
THE DIAGNOSIS
The patient’s rash and pruritus worsened after meropenem was introduced. A hepatitis panel was nonreactive except for prior hepatitis A exposure. Ultrasound of the liver and spleen was normal. Investigation of pneumonia pathogens including Legionella, Streptococcus, Mycoplasma, and Chlamydia psittaci did not reveal any causative agents. A skin biopsy revealed perivascular neutrophilic dermatitis with dyskeratosis.
The patient was diagnosed with DRESS (drug reaction with eosinophilia and systemic symptoms) syndrome based on his fever, worsening morbilliform rash, lymphadenopathy, and elevated liver transaminase levels. Although he did not have marked eosinophilia, atypical lymphocytes were present. Serologies for human herpesvirus (HHV), Epstein-Barr virus (EBV), and cytomegalovirus (CMV) were all unremarkable.
Continue to: During discussions...
During discussions with an infectious disease specialist, it was concluded that the patient’s DRESS syndrome was likely secondary to beta-lactam antibiotics. The patient had been receiving cefepime prior to hospitalization. Meropenem was discontinued and aztreonam was started, with continued linezolid. This patient did not have a reactivation of a herpesvirus (HHV-6, HHV-7, EBV, or CMV), which has been previously reported in cases of DRESS syndrome.
DISCUSSION
DRESS syndrome is a challenging diagnosis to make due to the multiplicity of presenting symptoms. Skin rash, lymphadenopathy, hepatic involvement, and hypereosinophilia are characteristic findings.1 Accurate diagnosis reduces fatal disease outcomes, which are estimated to occur in 5%-10% of cases.1,2
Causative agents. DRESS syndrome typically occurs 2 to 6 weeks after the introduction of the causative agent, commonly an aromatic anticonvulsant or antibiotic.3 The incidence of DRESS syndrome in patients using carbamazepine and phenytoin is estimated to be 1 to 5 per 10,000 patients. The incidence of DRESS syndrome in patients using antibiotics is unknown. Frequently, the inducing antibiotic is a beta-lactam, as in this case.4,5
The pathogenesis of DRESS syndrome is not well understood, although there appears to be an immune-mediated reaction that occurs in certain patients after viral reactivation, particularly with herpesviruses. In vitro studies have demonstrated that the culprit drug is able to induce viral reactivation leading to T-lymphocyte response and systemic inflammation, which occurs in multiple organs.6,7 Reported long-term sequelae of DRESS syndrome include immune-mediated diseases such as thyroiditis and type 1 diabetes. In addition, it is hypothesized that there is a genetic predisposition involving human leukocyte antigens that increases the likelihood that individuals will develop DRESS syndrome.5,8
Diagnosis. The
Continue to: Treatment
Treatment is aimed at stopping the causative agent and starting moderate- to high-dose systemic corticosteroids (from 0.5 to 2 mg/kg/d). If symptoms continue to progress, cyclosporine can be used. N-acetylcysteine may also be beneficial due to its ability to neutralize drug metabolites that can stimulate T-cell response.7 There has not been sufficient evidence to suggest that antiviral medication should be initiated.1,7
Our patient was treated with 2 mg/kg/d of prednisone, along with triamcinolone cream, diphenhydramine, and N-acetylcysteine. His rash improved dramatically during his hospital stay and at the subsequent 1-month follow-up was completely resolved.
THE TAKEAWAY
DRESS syndrome should be suspected in patients presenting with fever, rash, lymphadenopathy, pulmonary infiltrates, and liver involvement after initiation of drugs commonly associated with this syndrome. Our case reinforces previous clinical evidence that beta-lactam antibiotics are a common cause of DRESS syndrome; patients taking these medications should be closely monitored. Cross-reactions are frequent, and it is imperative that patients avoid related drugs to prevent recurrence. Although glucocorticoids are the mainstay of treatment, further studies are needed to assess the benefits of N-acetylcysteine.
CORRESPONDENCE
W. Jacob Cobb, MD, JPS Health Network, 1500 South Main Street, Fort Worth, TX, 76104; w.jacob.cobb@gmail.com
THE CASE
A 45-year-old man was admitted to the hospital with a fever and generalized rash. For the previous 2 weeks, he had been treated at a skilled nursing facility with IV vancomycin and cefepime for left calcaneal osteomyelitis. He reported that the rash was pruritic and started 2 days prior to hospital admission.
His past medical history was significant for type 2 diabetes mellitus and polysubstance drug abuse. Medical and travel history were otherwise unremarkable. The patient was taking the following medications at the time of presentation: hydrocodone-acetaminophen, cyclobenzaprine, melatonin, and metformin.
Initial vital signs included a temperature of 102.9°F; respiratory rate, 22 breaths/min; heart rate, 97 beats/min; and blood pressure, 89/50 mm Hg. Physical exam was notable for left anterior cervical and axillary lymphadenopathy. The patient had no facial edema, but he did have a diffuse, morbilliform rash on his bilateral upper and lower extremities, encompassing about 54% of his body surface area (FIGURE 1).
Laboratory studies revealed a white blood cell count of 4.7/mcL, with 3.4% eosinophils and 10.9% monocytes; an erythrocyte sedimentation rate of 60 mm/h; and a C-reactive protein level of 1 mg/dL. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels were both elevated (AST: 95 U/L [normal range, 8 - 48 U/L]; ALT: 115 U/L [normal range: 7 - 55 U/L]). A chest x-ray was obtained and showed new lung infiltrates (FIGURE 2).
Linezolid and meropenem were initiated for a presumed health care–associated pneumonia, and a sepsis work-up was initiated.
THE DIAGNOSIS
The patient’s rash and pruritus worsened after meropenem was introduced. A hepatitis panel was nonreactive except for prior hepatitis A exposure. Ultrasound of the liver and spleen was normal. Investigation of pneumonia pathogens including Legionella, Streptococcus, Mycoplasma, and Chlamydia psittaci did not reveal any causative agents. A skin biopsy revealed perivascular neutrophilic dermatitis with dyskeratosis.
The patient was diagnosed with DRESS (drug reaction with eosinophilia and systemic symptoms) syndrome based on his fever, worsening morbilliform rash, lymphadenopathy, and elevated liver transaminase levels. Although he did not have marked eosinophilia, atypical lymphocytes were present. Serologies for human herpesvirus (HHV), Epstein-Barr virus (EBV), and cytomegalovirus (CMV) were all unremarkable.
Continue to: During discussions...
During discussions with an infectious disease specialist, it was concluded that the patient’s DRESS syndrome was likely secondary to beta-lactam antibiotics. The patient had been receiving cefepime prior to hospitalization. Meropenem was discontinued and aztreonam was started, with continued linezolid. This patient did not have a reactivation of a herpesvirus (HHV-6, HHV-7, EBV, or CMV), which has been previously reported in cases of DRESS syndrome.
DISCUSSION
DRESS syndrome is a challenging diagnosis to make due to the multiplicity of presenting symptoms. Skin rash, lymphadenopathy, hepatic involvement, and hypereosinophilia are characteristic findings.1 Accurate diagnosis reduces fatal disease outcomes, which are estimated to occur in 5%-10% of cases.1,2
Causative agents. DRESS syndrome typically occurs 2 to 6 weeks after the introduction of the causative agent, commonly an aromatic anticonvulsant or antibiotic.3 The incidence of DRESS syndrome in patients using carbamazepine and phenytoin is estimated to be 1 to 5 per 10,000 patients. The incidence of DRESS syndrome in patients using antibiotics is unknown. Frequently, the inducing antibiotic is a beta-lactam, as in this case.4,5
The pathogenesis of DRESS syndrome is not well understood, although there appears to be an immune-mediated reaction that occurs in certain patients after viral reactivation, particularly with herpesviruses. In vitro studies have demonstrated that the culprit drug is able to induce viral reactivation leading to T-lymphocyte response and systemic inflammation, which occurs in multiple organs.6,7 Reported long-term sequelae of DRESS syndrome include immune-mediated diseases such as thyroiditis and type 1 diabetes. In addition, it is hypothesized that there is a genetic predisposition involving human leukocyte antigens that increases the likelihood that individuals will develop DRESS syndrome.5,8
Diagnosis. The
Continue to: Treatment
Treatment is aimed at stopping the causative agent and starting moderate- to high-dose systemic corticosteroids (from 0.5 to 2 mg/kg/d). If symptoms continue to progress, cyclosporine can be used. N-acetylcysteine may also be beneficial due to its ability to neutralize drug metabolites that can stimulate T-cell response.7 There has not been sufficient evidence to suggest that antiviral medication should be initiated.1,7
Our patient was treated with 2 mg/kg/d of prednisone, along with triamcinolone cream, diphenhydramine, and N-acetylcysteine. His rash improved dramatically during his hospital stay and at the subsequent 1-month follow-up was completely resolved.
THE TAKEAWAY
DRESS syndrome should be suspected in patients presenting with fever, rash, lymphadenopathy, pulmonary infiltrates, and liver involvement after initiation of drugs commonly associated with this syndrome. Our case reinforces previous clinical evidence that beta-lactam antibiotics are a common cause of DRESS syndrome; patients taking these medications should be closely monitored. Cross-reactions are frequent, and it is imperative that patients avoid related drugs to prevent recurrence. Although glucocorticoids are the mainstay of treatment, further studies are needed to assess the benefits of N-acetylcysteine.
CORRESPONDENCE
W. Jacob Cobb, MD, JPS Health Network, 1500 South Main Street, Fort Worth, TX, 76104; w.jacob.cobb@gmail.com
1. Cacoub P, Musette P, Descamps V, et al. The DRESS syndrome: a literature review. Am J Med. 2011;124:588-597.
2. Chen Y, Chiu H, Chu C. Drug reaction with eosinophilia and systemic symptoms: a retrospective study of 60 cases. Arch Dermatol. 2010;146:1373-1379.
3. Jeung Y-J, Lee J-Y, Oh M-J, et al. Comparison of the causes and clinical features of drug rash with eosinophilia and systemic symptoms and Stevens-Johnson syndrome. Allergy Asthma Immunol Res. 2010;2:123–126.
4. Shiohara T, Iijima M, Ikezawa Z, et al. The diagnosis of a DRESS syndrome has been sufficiently established on the basis of typical clinical features and viral reactivations [commentary]. Br J Dermatol. 2006;156:1083-1084.
5. Ben-Said B, Arnaud-Butel S, Rozières A, et al. Allergic delayed drug hypersensitivity is more frequently diagnosed in drug reaction, eosinophilia and systemic symptoms (DRESS) syndrome than in exanthema induced by beta lactam antibiotics. J Dermatol Sci. 2015;80:71-74.
6. Schrijvers R, Gilissen L, Chiriac AM, et al. Pathogenesis and diagnosis of delayed-type drug hypersensitivity reactions, from bedside to bench and back. Clin Transl Allergy. 2015;5:31.
7. Moling O, Tappeiner L, Piccin A, et al. Treatment of DIHS/DRESS syndrome with combined N-acetylcysteine, prednisone and valganciclovir—a hypothesis. Med Sci Monit. 2012;18:CS57-CS62.
8. Cardoso CS, Vieira AM, Oliveira AP. DRESS syndrome: a case report and literature review. BMJ Case Rep. 2011;2011:bcr0220113898.
9. Kardaun SH, Sekula P, Valeyrie-Allanore L, et al. Drug reaction with eosinophilia and systemic symptoms (DRESS): an original multisystem adverse drug reaction. Results from the prospective RegiSCAR study. Br J Dermatol. 2013;169:1071-1080.
10. Bernard L, Eichenfield L. Drug-associated rashes. In: Zaoutis L, Chiang V, eds. Comprehensive Pediatric Hospital Medicine. Philadelphia, PA: Elsevier; 2010: 1005-1011.
11. Grover S. Severe cutaneous adverse reactions. Indian J Dermatol Venereol Leprol. 2011;77:3-6.
1. Cacoub P, Musette P, Descamps V, et al. The DRESS syndrome: a literature review. Am J Med. 2011;124:588-597.
2. Chen Y, Chiu H, Chu C. Drug reaction with eosinophilia and systemic symptoms: a retrospective study of 60 cases. Arch Dermatol. 2010;146:1373-1379.
3. Jeung Y-J, Lee J-Y, Oh M-J, et al. Comparison of the causes and clinical features of drug rash with eosinophilia and systemic symptoms and Stevens-Johnson syndrome. Allergy Asthma Immunol Res. 2010;2:123–126.
4. Shiohara T, Iijima M, Ikezawa Z, et al. The diagnosis of a DRESS syndrome has been sufficiently established on the basis of typical clinical features and viral reactivations [commentary]. Br J Dermatol. 2006;156:1083-1084.
5. Ben-Said B, Arnaud-Butel S, Rozières A, et al. Allergic delayed drug hypersensitivity is more frequently diagnosed in drug reaction, eosinophilia and systemic symptoms (DRESS) syndrome than in exanthema induced by beta lactam antibiotics. J Dermatol Sci. 2015;80:71-74.
6. Schrijvers R, Gilissen L, Chiriac AM, et al. Pathogenesis and diagnosis of delayed-type drug hypersensitivity reactions, from bedside to bench and back. Clin Transl Allergy. 2015;5:31.
7. Moling O, Tappeiner L, Piccin A, et al. Treatment of DIHS/DRESS syndrome with combined N-acetylcysteine, prednisone and valganciclovir—a hypothesis. Med Sci Monit. 2012;18:CS57-CS62.
8. Cardoso CS, Vieira AM, Oliveira AP. DRESS syndrome: a case report and literature review. BMJ Case Rep. 2011;2011:bcr0220113898.
9. Kardaun SH, Sekula P, Valeyrie-Allanore L, et al. Drug reaction with eosinophilia and systemic symptoms (DRESS): an original multisystem adverse drug reaction. Results from the prospective RegiSCAR study. Br J Dermatol. 2013;169:1071-1080.
10. Bernard L, Eichenfield L. Drug-associated rashes. In: Zaoutis L, Chiang V, eds. Comprehensive Pediatric Hospital Medicine. Philadelphia, PA: Elsevier; 2010: 1005-1011.
11. Grover S. Severe cutaneous adverse reactions. Indian J Dermatol Venereol Leprol. 2011;77:3-6.
A primary care guide to bipolar depression treatment
Bipolar disorder is a prevalent disorder in the primary care setting.1,2 Primary care providers therefore commonly encounter bipolar depression (BD; a major depressive episode in the context of bipolar disorder), which might be (1) an emerging depressive episode in previously undiagnosed bipolar disorder or (2) a recurrent episode during the course of chronic bipolar illness.3,4
A primary care–based collaborative model has been identified as a potential strategy for effective management of chronic mental health conditions such as bipolar disorder.5,6 However, this collaborative treatment model isn’t widely available; many patients with bipolar disorder are, in fact, treated solely by their primary care provider.
Two years ago in this journal,7 we addressed how to precisely identify an episode of BD and differentiate it from major depressive disorder (MDD; also known as unipolar depression). In this review, in addition to advancing clinical knowledge of BD, we provide:
- an overview of treatment options for BD (in contrast to the treatment of unipolar depression)
- the pharmacotherapeutic know-how to initiate and maintain treatment for uncomplicated episodes of BD.
We do not discuss management of manic, hypomanic, and mixed episodes of bipolar disorder.
How to identify bipolar depression
Understanding the (sometimes) unclear distinction between bipolar I and bipolar II disorders in an individual patient is key to formulating a therapeutic regimen for BD.
Bipolar I disorder consists of manic episodes, alternating (more often than not) with depressive episodes. Bipolar I usually manifests first with a depressive episode.
Bipolar II disorder manifests with depressive episodes and hypomanic episodes (but never manic episodes).
Continue to: Depressive episodes in the bipolar disorders
Depressive episodes in the bipolar disorders. Bipolar depression can be seen in the settings of both bipolar I and II disorders. When a patient presents with a manic episode, a history of depressive episodes is common (although not essential) to diagnose bipolar I; alternatively, a history of hypomania (but no prior mania) and depression is needed to make the diagnosis of bipolar II. The natural history of the bipolar disorders is therefore alternating manic and almost always depressive episodes (bipolar I) and alternating hypomanic and always depressive episodes (bipolar II).8
Symptoms of hypomanic episodes are similar to what are seen in manic episodes, but are of shorter duration (≥ 4 days [episodes of mania are at least of 1 week’s duration]), lower intensity (no psychotic symptoms), and not associated with significant functional impairment or hospitalization. Table 17 further describes the differentiating features of bipolar I and bipolar II. A history of an unequivocal manic or hypomanic episode makes the diagnosis of BD relatively easy. However, an unclear history of manic or hypomanic symptoms or episodes frequently leads to misdiagnosis or underdiagnosis of BD.
In both bipolar I and II, it is depressive symptoms and episodes that place the greatest burden on patients across the lifespan: They are the most commonly experienced features of the bipolar disorders9,10 and lead to significant distress and functional impairment11; in fact, patients with bipolar disorder spend 3 (or more) times as long in depressive episodes as in manic or hypomanic episodes.12,13 In addition, subthreshold depressive symptoms occur commonly between major mood episodes.
Failure to identify and adequately treat depressive episodes of the bipolar disorders can have serious consequences: Patients are at risk of a worsening course of illness, alcohol use disorder, substance use disorder, chronic disability, mixed states, rapid cycling of mood episodes, and suicide.
Guidelines for treating bipolar depression
Despite the similarity in presenting symptoms and signs of depressive episodes in bipolar disorders and MDD, treating episodes of BD is significantly different than treating MDD. Antidepressant monotherapy, a mainstay of treatment for MDD, has limited utility in BD (especially depressive episodes of bipolar I) because of its limited efficacy and potential to destabilize mood, lead to rapid cycling, and induce mania or hypomania. Treatment options for BD include pharmacotherapy (the primary modality), psychological intervention (a useful adjunct, described later), and electroconvulsive therapy (ECT; highly worth considering in severe or treatment-resistant cases).
Continue to: For this article...
For this article, we searched PubMed and Google Scholar for guidelines for the management of bipolar disorders in adults that were published between July 2013 (when the US Food and Drug Administration [FDA] approved lurasidone for the treatment of BD) and March 2019. Related guideline-referenced articles and clinical trials were also reviewed.
Our search identified 6 guidelines issued during the search period, developed by the:
- Canadian Network for Mood and Anxiety Treatments (CANMAT) and International Society for Bipolar Disorders (ISBD),14
- British Association for Psychopharmacology (BAP),15
- Japanese Society of Mood Disorders (JSMD),16
- National Institute for Health and Care Excellence (NICE),17
- International College of Neuropsychopharmacology (CINP),18 and
- Royal Australian and New Zealand College of Psychiatrists.19
How to manage an episode of bipolar depression
First-line pharmacotherapeutic agents for the management of BD in acute bipolar I are listed and described in Table 2.4-19 Compared to the number of studies and reports on the management of BD in bipolar I, few studies have been conducted that specifically examine the treatment of BD in acute bipolar II. In practice, evidence from the treatment of BD in bipolar I has been extrapolated to the treatment of bipolar II depression. CANMAT–ISBD guidelines recommend quetiapine as the only first-line therapy for BD in bipolar II; JSMD, CINP, and NICE guidelines do not make distinct recommendations for treating BD in bipolar II.
Patients who have BD can present de novo (ie, not taking any medication for bipolar disorder) or with a breakthrough episode while on maintenance medication(s). In either case, monotherapy for BD is preferred, although combinations of medications (Table 214-19) can be more effective in some cases. Treatment guidelines overlap to a high degree, especially in regard to first-line treatments, but there is variation, especially beyond first-line therapeutics.20
The top recommended medications for BD are lithium, quetiapine, olanzapine, lamotrigine, and combined olanzapine/fluoxetine. FDA-approved agents for treating acute BD specifically include quetiapine, lurasidone, and combined olanzapine/fluoxetine. Guidelines generally recommend a first step of adjusting the dosage of medications in any established regimen before changing or adding other agents. If clinical improvement is not seen using any recommended medications, psychiatric referral is recommended. See Table 321,22 for dosing and titration guidance and highlights of both common and rare but serious adverse effects.
Continue to: Recommendations, best options for acute bipolar depression
Recommendations, best options for acute bipolar depression
Start with lithium, lamotrigine, quetiapine, or lurasidone as the first-line medication at the dosages given in Table 3.21,22 Olanzapine alone, or in combination with fluoxetine, can be used when it has been determined that the medications listed above are ineffective.
Note that lithium requires regular blood monitoring (Table 321,22). However, lithium has the advantage of strong supporting evidence of benefit in all mood episodes of bipolar disorders (depressive, manic, hypomanic), as well as maintenance, prevention of recurrence, and anti-suicidal properties.
Also of note: Lurasidone is much more costly than other recommended medications because it is available only by brand name in the United States; the other agents are available as generics. Consider generic equivalents of the recommended agents when cost is an important factor, in part because of the impact that cost has on medication adherence for some patients.
Last, olanzapine should be used later in the treatment algorithm, unless rapid control of symptoms is needed or other first-line medications are ineffective or not tolerated—given the higher propensity of the drug to produce weight gain and cause metabolic problems, including obesity and hyperglycemia.
The importance of maintenance therapy
Almost all patients with BD require maintenance treatment to prevent subsequent episodes, reduce residual symptoms, and restore functioning and quality of life. Maintenance therapy is formulated on the basis of efficacy and tolerability in the individual patient.
Continue to: As a general rule...
As a general rule, the strongest evidence for preventing recurrent BD episodes favors lithium—and most guidelines therefore support lithium as first-line maintenance therapy. It is important to note, however, that if a medication (or medications) successfully aborted an acute BD episode in a given patient, that agent (or agents) should be continued for maintenance purposes to prevent or minimize future episodes—generally, at the same dosage. First-line pharmacotherapeutic agents for the maintenance of bipolar disorder, and thus to prevent subsequent episodes of BD, are listed in Table 4.14-19
℞ antidepressantsin bipolar depression?
The use of antidepressants to treat BD remains a topic of ongoing deliberation. Antidepressant treatment of BD has historically raised concern for depressive relapse due to ineffectiveness and the ability of antidepressants to increase (1) the frequency of manic and hypomanic episodes23 and (2) mood instability in the form of induction of mixed states or rapid cycling. Among most authorities, the recommendation against using antidepressants for BD in both bipolar I and II is the same; however, limited evidence allows the use of antidepressant monotherapy in select cases of BD episodes in bipolar II,24,25 although not bipolar I.
The consensus in the field is that medications with mood-stabilizing effects should be considered as monotherapy before adding an antidepressant (if an antidepressant is to be added) to treat BD in bipolar II.26 In other words, if an antidepressant is to be used at all, it should be combined with a mood stabilizer or atypical antipsychotic15,27 and should probably not be used long term. The efficacy of antidepressants in treating BD in bipolar II should be assessed periodically at follow-up.
Nonpharmaceutical treatment options
Although pharmacotherapy is the mainstay of treatment of BD, adjunctive psychotherapy can be useful for treating acute BD episodes that occur during the maintenance phase of the disorder. Psychoeducation (ie, education on psychiatric illness and the importance of medication adherence), alone or in combination with interpersonal and social rhythm therapy (IPSRT), family-focused therapy (FFT), and cognitive behavioral therapy (CBT) can add to the overall efficacy of pharmacotherapy by lowering the risk of relapse and enhancing psychosocial functioning.28
IPSRT is supported by what is known as the instability model, which specifies that 3 interconnected pathways trigger recurrences of a bipolar episode: stressful life events, medication nonadherence, and social-rhythm disruption. IPSRT also uses principles of interpersonal psychotherapy that are applied in treating MDD, “arguing that improvement in interpersonal relationships can ameliorate affective symptoms and prevent their return.”29,30
Continue to: FFT
FFT focuses on communication styles between patients and their spouses and families. The goal is to improve relationship functioning. FFT is delivered to the patient and the family.
Attention to social factors. For psychotherapy to provide adequate results as an adjunct to pharmacotherapy, social stressors (eg, homelessness and financial concerns) might also need to be considered and addressed through social services or a social work consult.
NICE guidelines recommend psychological intervention (in particular, with CBT and FFT) for acute BD. CANMAT–ISBD guidelines recommend either adjunctive psychoeducation, CBT, or FFT during the maintenance phase. Again, medication is the mainstay of treatment for BD in bipolar disorders; psychotherapy has an adjunctive role—unlike the approach to treatment of MDD, in which psychotherapy can be used alone in cases of mild, or even moderate, severity.
Referral for specialty care
In the primary care setting, providers might choose to manage BD by initiating first-line pharmacotherapeutic agents or continuing established treatment regimens with necessary dosage adjustments. These patients should be monitored closely until symptoms remit.
However, it is important for the primary care provider to identify patients who need psychiatric referral. Complex presentations, severe symptoms, and poor treatment response might warrant evaluation and management by a psychiatrist. Furthermore, patients with comorbid psychotic features, catatonia, or severely debilitating depression (with or without suicidality) need referral to the emergency department.
Continue to: Electroconvulsive therapy (ECT)
Electroconvulsive therapy (ECT). Patients might also need referral to Psychiatry for ECT, which is recommended by CANMAT–ISBD and JSMD guidelines as a second-line option; by the Royal Australian and New Zealand College of Psychiatrists as a third-line option; and by BAP for cases that are resistant to conventional treatment, with or without a high risk of suicide; in pregnancy; and in life-threatening situations.15,31,32
Telemedicine. There is a considerable shortage of mental health care professionals.33,34 The fact that nearly all (96%) counties in the United States have an unmet need for prescribers of mental health services (mainly psychiatrists) makes it crucial that primary care physicians be knowledgeable and prepared to manage BD—often with infrequent psychiatry consultation or, even, without psychiatry consultation. For primary care facilities that lack access to psychiatric services, telemedicine can be used as a consultative resource.
Psychiatric consultation using telemedicine technologies has provided significant cost savings for medical centers and decreased the likelihood of hospital admission,35 thereby alleviating health care costs and improving care, as shown in a rural Kansas county study.36 Furthermore, the burden on emergency departments in several states has been significantly reduced with psychiatric consultations via interactive telemedicine technologies.37
ACKNOWLEDGEMENT
Mark Yassa, BS, provided editing assistance.
CORRESPONDENCE
Nagy Youssef, MD, PhD, Medical College of Georgia at Augusta University, Department of Psychiatry and Health Behavior, 997 St. Sebastian Way, Augusta, GA 30912; nyoussef@augusta.edu.
1. Cerimele JM, Chwastiak LA, Dodson S, et al. The prevalence of bipolar disorder in general primary care samples: a systematic review. Gen Hosp Psychiatry. 2014;36:19-25.
2. Stubbs B, Vancampfort D, Solmi M, et al. How common is bipolar disorder in general primary care attendees? A systematic review and meta-analysis investigating prevalence determined according to structured clinical assessments. Aust N Z J Psychiatry. 2016;50:631-639.
3. Carta MG, Norcini-Pala A, Moro MF, et al. Does mood disorder questionnaire identify sub-threshold bipolarity? Evidence studying worsening of quality of life. J Affect Disord. 2015;183:173-178.
4. Fonseca-Pedrero E, Ortuno-Sierra J, Paino M, et al. Screening the risk of bipolar spectrum disorders: validity evidence of the Mood Disorder Questionnaire in adolescents and young adults. Rev Psiquiatr Salud Ment. 2016;9:4-12.
5. Reilly S, Planner C, Gask L, et al. Collaborative care approaches for people with severe mental illness. Cochrane Database Syst Rev. 2013;(11):CD009531.
6. Woltmann E, Grogan-Kaylor A, Perron B, et al. Comparative effectiveness of collaborative chronic care models for mental health conditions across primary, specialty, and behavioral health care settings: systematic review and meta-analysis. Am J Psychiatry. 2012;169:790-804.
7. Aquadro E, Youssef NA. Combine these screening tools to detect bipolar depression. J Fam Pract. 2018;67:500-503.
8. Bipolar and related disorders. In: American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders (DSM-5). 5th ed. American Psychiatric Association Publishing; 2013:123.
9. Judd LL, Akiskal HS, Schettler PJ, et al. The comparative clinical phenotype and long term longitudinal episode course of bipolar I and II: a clinical spectrum or distinct disorders? J Affect Disord. 2013;73:19-32.
10. Judd LL, Akiskal HS, Schettler PJ, et al. The long-term natural history of the weekly symptomatic status of bipolar I disorder. Arch Gen Psychiatry. 2002;59:530-537.
11. Simon GE, Bauer MS, Ludman EJ, et al. Mood symptoms, functional impairment, and disability in people with bipolar disorder: specific effects of mania and depression. J Clin Psychiatry. 2007;68:1237-1245.
12. Judd LL, Schettler PJ, Akiskal HS, et al. Residual symptom recovery from major affective episodes in bipolar disorders and rapid episode relapse/recurrence. Arch Gen Psychiatry. 2008;65:386-394.
13. Judd LL, Schettler PJ, Solomon DA, et al. Psychosocial disability and work role function compared across the long-term course of bipolar I, bipolar II and unipolar major depressive disorders. J Affect Disord. 2008;108:49-58.
14. Yatham LN, Kennedy SH, Parikh S, et al. Canadian Network for Mood and Anxiety Treatments (CANMAT) and International Society for Bipolar Disorders (ISBD) 2018 guidelines for the management of patients with bipolar disorder. Bipolar Disord. 2018;20:97-170.
15. Goodwin GM, Haddad PM, Ferrier IN, et al. Evidence-based guidelines for treating bipolar disorder: revised third edition recommendations from the British Association for Psychopharmacology. J Psychopharmacol. 2016;30:495-553.
16. Kanba S, Kato T, Terao T, et al; Committee for Treatment Guidelines of Mood Disorders, Japanese Society of Mood Disorders, 2012. Guideline for treatment of bipolar disorder by the Japanese Society of Mood Disorders, 2012. Psychiatry Clin Neurosci. 2013;67:285-300.
17. National Institute for Health and Care Excellence. Bipolar disorder: assessment and management. Clinical Guideline CG185. September 24, 2014. www.nice.org.uk/guidance/cg185. Accessed August 17, 2020.
18. Fountoulakis KN, Grunze H, Vieta E, et al. The International College of Neuro-Psychopharmacology (CINP) Treatment Guidelines for Bipolar Disorder in Adults (CINP-BD-2017), Part 3: the clinical guidelines. Int J Neuropsychopharmacol. 2017;20:180-195.
19. Malhi GS, Outhred T, Morris G, et al. Royal Australian and New Zealand College of Psychiatrists clinical practice guidelines for mood disorders: bipolar disorder summary. Med J Aust. 2018;208:219-225.
20. Hammett S, Youssef NA. Systematic review of recent guidelines for pharmacological treatments of bipolar disorders in adults. Ann Clin Psychiatry. 2017;29:266-282.
21. Gabbard GO, ed. Gabbard’s Treatments of Psychiatric Disorders. 5th ed. American Psychiatric Association Publishing; 2014: chap 12-15.
22. National Health Service. Guidelines for the monitoring of antimanic and prophylactic medication in bipolar disorder. NHT policy number MM-G-023. 2009. http://fac.ksu.edu.sa/sites/default/files/bipolar_disorder_guidelines.pdf. Accessed August 17, 2020.
23. Geddes JR, Carney SM, Davies C, et al. Relapse prevention with antidepressant drug treatment in depressive disorders: a systematic review. Lancet. 2003;361:653-661.
24. Amsterdam JD, Lorenzo-Luaces L, Soeller I, et al. Safety and effectiveness of continuation antidepressant versus mood stabilizer monotherapy for relapse-prevention of bipolar II depression: a randomized, double-blind, parallel-group, prospective study. J Affect Disord. 2015;185:31-37.
25. Parker G, Tully L, Olley A, et al. SSRIs as mood stabilizers for bipolar II disorder? A proof of concept study. J Affect Disord. 2006;92:205-214.
26. Pacchiarotti I, Bond DJ, Baldessarini RJ, et al. The International Society for Bipolar Disorders (ISBD) Task Force report on antidepressant use in bipolar disorders. Am J Psychiatry. 2013;170:1249-1262.
27. Royal Australian and New Zealand College of Psychiatrists Clinical Practice Guidelines Team for Bipolar Disorder. Australian and New Zealand clinical practice guidelines for the treatment of bipolar disorder. Aust N Z J Psychiatry. 2004;38:280-305.
28. Chiang K-J, Tsai J-C, Liu D, et al. Efficacy of cognitive-behavioral therapy in patients with bipolar disorder: a meta-analysis of randomized controlled trials. PLoS One. 2017;12:e0176849.
29. de Mello MF, de Jesus Mari J, Bacaltchuk J, et al. A systematic review of research findings on the efficacy of interpersonal therapy for depressive disorders. Eur Arch Psychiatry Clin Neurosci. 2005;255:75-82.
30. Zhou X, Teng T, Zhang Y, et al. Comparative efficacy and acceptability of antidepressants, psychotherapies, and their combination for acute treatment of children and adolescents with depressive disorder: a systematic review and network meta-analysis. Lancet Psychiatry. 2020;7:581-601.
31. Daly JJ, Prudic J, Devanand DP, et al. ECT in bipolar and unipolar depression: differences in speed of response. Bipolar Disord. 2001;3:95-104.
32. Medda P, Perugi G, Zanello S, et al. Response to ECT in bipolar I, bipolar II and unipolar depression. J Affect Disord. 2009;118:55-59.
33. Ellis AR, Konrad TR, Thomas KC, et al. County-level estimates of mental health professional supply in the United States. Psychiatr Serv. 2009;60:1315-1322.
34. Thomas KC, Ellis AR, Konrad TR, et al. County-level estimates of mental health professional shortage in the United States. Psychiatr Serv. 2009;60:1323-1328.
35. Narasimhan M, Druss BG, Hockenberry JM, et al. Impact of a telepsychiatry program at emergency departments statewide on the quality, utilization, and costs of mental health services. Psychiatr Serv. 2015;66:1167-1172.
36. Spaulding R, Belz N, DeLurgio S, et al. Cost savings of telemedicine utilization for child psychiatry in a rural Kansas community. Telemed J E Health. 2010;16:867-871.
37. States leverage telepsychiatry solutions to ease ED crowding, accelerate care. ED Manag. 2015;27:13-17.
Bipolar disorder is a prevalent disorder in the primary care setting.1,2 Primary care providers therefore commonly encounter bipolar depression (BD; a major depressive episode in the context of bipolar disorder), which might be (1) an emerging depressive episode in previously undiagnosed bipolar disorder or (2) a recurrent episode during the course of chronic bipolar illness.3,4
A primary care–based collaborative model has been identified as a potential strategy for effective management of chronic mental health conditions such as bipolar disorder.5,6 However, this collaborative treatment model isn’t widely available; many patients with bipolar disorder are, in fact, treated solely by their primary care provider.
Two years ago in this journal,7 we addressed how to precisely identify an episode of BD and differentiate it from major depressive disorder (MDD; also known as unipolar depression). In this review, in addition to advancing clinical knowledge of BD, we provide:
- an overview of treatment options for BD (in contrast to the treatment of unipolar depression)
- the pharmacotherapeutic know-how to initiate and maintain treatment for uncomplicated episodes of BD.
We do not discuss management of manic, hypomanic, and mixed episodes of bipolar disorder.
How to identify bipolar depression
Understanding the (sometimes) unclear distinction between bipolar I and bipolar II disorders in an individual patient is key to formulating a therapeutic regimen for BD.
Bipolar I disorder consists of manic episodes, alternating (more often than not) with depressive episodes. Bipolar I usually manifests first with a depressive episode.
Bipolar II disorder manifests with depressive episodes and hypomanic episodes (but never manic episodes).
Continue to: Depressive episodes in the bipolar disorders
Depressive episodes in the bipolar disorders. Bipolar depression can be seen in the settings of both bipolar I and II disorders. When a patient presents with a manic episode, a history of depressive episodes is common (although not essential) to diagnose bipolar I; alternatively, a history of hypomania (but no prior mania) and depression is needed to make the diagnosis of bipolar II. The natural history of the bipolar disorders is therefore alternating manic and almost always depressive episodes (bipolar I) and alternating hypomanic and always depressive episodes (bipolar II).8
Symptoms of hypomanic episodes are similar to what are seen in manic episodes, but are of shorter duration (≥ 4 days [episodes of mania are at least of 1 week’s duration]), lower intensity (no psychotic symptoms), and not associated with significant functional impairment or hospitalization. Table 17 further describes the differentiating features of bipolar I and bipolar II. A history of an unequivocal manic or hypomanic episode makes the diagnosis of BD relatively easy. However, an unclear history of manic or hypomanic symptoms or episodes frequently leads to misdiagnosis or underdiagnosis of BD.
In both bipolar I and II, it is depressive symptoms and episodes that place the greatest burden on patients across the lifespan: They are the most commonly experienced features of the bipolar disorders9,10 and lead to significant distress and functional impairment11; in fact, patients with bipolar disorder spend 3 (or more) times as long in depressive episodes as in manic or hypomanic episodes.12,13 In addition, subthreshold depressive symptoms occur commonly between major mood episodes.
Failure to identify and adequately treat depressive episodes of the bipolar disorders can have serious consequences: Patients are at risk of a worsening course of illness, alcohol use disorder, substance use disorder, chronic disability, mixed states, rapid cycling of mood episodes, and suicide.
Guidelines for treating bipolar depression
Despite the similarity in presenting symptoms and signs of depressive episodes in bipolar disorders and MDD, treating episodes of BD is significantly different than treating MDD. Antidepressant monotherapy, a mainstay of treatment for MDD, has limited utility in BD (especially depressive episodes of bipolar I) because of its limited efficacy and potential to destabilize mood, lead to rapid cycling, and induce mania or hypomania. Treatment options for BD include pharmacotherapy (the primary modality), psychological intervention (a useful adjunct, described later), and electroconvulsive therapy (ECT; highly worth considering in severe or treatment-resistant cases).
Continue to: For this article...
For this article, we searched PubMed and Google Scholar for guidelines for the management of bipolar disorders in adults that were published between July 2013 (when the US Food and Drug Administration [FDA] approved lurasidone for the treatment of BD) and March 2019. Related guideline-referenced articles and clinical trials were also reviewed.
Our search identified 6 guidelines issued during the search period, developed by the:
- Canadian Network for Mood and Anxiety Treatments (CANMAT) and International Society for Bipolar Disorders (ISBD),14
- British Association for Psychopharmacology (BAP),15
- Japanese Society of Mood Disorders (JSMD),16
- National Institute for Health and Care Excellence (NICE),17
- International College of Neuropsychopharmacology (CINP),18 and
- Royal Australian and New Zealand College of Psychiatrists.19
How to manage an episode of bipolar depression
First-line pharmacotherapeutic agents for the management of BD in acute bipolar I are listed and described in Table 2.4-19 Compared to the number of studies and reports on the management of BD in bipolar I, few studies have been conducted that specifically examine the treatment of BD in acute bipolar II. In practice, evidence from the treatment of BD in bipolar I has been extrapolated to the treatment of bipolar II depression. CANMAT–ISBD guidelines recommend quetiapine as the only first-line therapy for BD in bipolar II; JSMD, CINP, and NICE guidelines do not make distinct recommendations for treating BD in bipolar II.
Patients who have BD can present de novo (ie, not taking any medication for bipolar disorder) or with a breakthrough episode while on maintenance medication(s). In either case, monotherapy for BD is preferred, although combinations of medications (Table 214-19) can be more effective in some cases. Treatment guidelines overlap to a high degree, especially in regard to first-line treatments, but there is variation, especially beyond first-line therapeutics.20
The top recommended medications for BD are lithium, quetiapine, olanzapine, lamotrigine, and combined olanzapine/fluoxetine. FDA-approved agents for treating acute BD specifically include quetiapine, lurasidone, and combined olanzapine/fluoxetine. Guidelines generally recommend a first step of adjusting the dosage of medications in any established regimen before changing or adding other agents. If clinical improvement is not seen using any recommended medications, psychiatric referral is recommended. See Table 321,22 for dosing and titration guidance and highlights of both common and rare but serious adverse effects.
Continue to: Recommendations, best options for acute bipolar depression
Recommendations, best options for acute bipolar depression
Start with lithium, lamotrigine, quetiapine, or lurasidone as the first-line medication at the dosages given in Table 3.21,22 Olanzapine alone, or in combination with fluoxetine, can be used when it has been determined that the medications listed above are ineffective.
Note that lithium requires regular blood monitoring (Table 321,22). However, lithium has the advantage of strong supporting evidence of benefit in all mood episodes of bipolar disorders (depressive, manic, hypomanic), as well as maintenance, prevention of recurrence, and anti-suicidal properties.
Also of note: Lurasidone is much more costly than other recommended medications because it is available only by brand name in the United States; the other agents are available as generics. Consider generic equivalents of the recommended agents when cost is an important factor, in part because of the impact that cost has on medication adherence for some patients.
Last, olanzapine should be used later in the treatment algorithm, unless rapid control of symptoms is needed or other first-line medications are ineffective or not tolerated—given the higher propensity of the drug to produce weight gain and cause metabolic problems, including obesity and hyperglycemia.
The importance of maintenance therapy
Almost all patients with BD require maintenance treatment to prevent subsequent episodes, reduce residual symptoms, and restore functioning and quality of life. Maintenance therapy is formulated on the basis of efficacy and tolerability in the individual patient.
Continue to: As a general rule...
As a general rule, the strongest evidence for preventing recurrent BD episodes favors lithium—and most guidelines therefore support lithium as first-line maintenance therapy. It is important to note, however, that if a medication (or medications) successfully aborted an acute BD episode in a given patient, that agent (or agents) should be continued for maintenance purposes to prevent or minimize future episodes—generally, at the same dosage. First-line pharmacotherapeutic agents for the maintenance of bipolar disorder, and thus to prevent subsequent episodes of BD, are listed in Table 4.14-19
℞ antidepressantsin bipolar depression?
The use of antidepressants to treat BD remains a topic of ongoing deliberation. Antidepressant treatment of BD has historically raised concern for depressive relapse due to ineffectiveness and the ability of antidepressants to increase (1) the frequency of manic and hypomanic episodes23 and (2) mood instability in the form of induction of mixed states or rapid cycling. Among most authorities, the recommendation against using antidepressants for BD in both bipolar I and II is the same; however, limited evidence allows the use of antidepressant monotherapy in select cases of BD episodes in bipolar II,24,25 although not bipolar I.
The consensus in the field is that medications with mood-stabilizing effects should be considered as monotherapy before adding an antidepressant (if an antidepressant is to be added) to treat BD in bipolar II.26 In other words, if an antidepressant is to be used at all, it should be combined with a mood stabilizer or atypical antipsychotic15,27 and should probably not be used long term. The efficacy of antidepressants in treating BD in bipolar II should be assessed periodically at follow-up.
Nonpharmaceutical treatment options
Although pharmacotherapy is the mainstay of treatment of BD, adjunctive psychotherapy can be useful for treating acute BD episodes that occur during the maintenance phase of the disorder. Psychoeducation (ie, education on psychiatric illness and the importance of medication adherence), alone or in combination with interpersonal and social rhythm therapy (IPSRT), family-focused therapy (FFT), and cognitive behavioral therapy (CBT) can add to the overall efficacy of pharmacotherapy by lowering the risk of relapse and enhancing psychosocial functioning.28
IPSRT is supported by what is known as the instability model, which specifies that 3 interconnected pathways trigger recurrences of a bipolar episode: stressful life events, medication nonadherence, and social-rhythm disruption. IPSRT also uses principles of interpersonal psychotherapy that are applied in treating MDD, “arguing that improvement in interpersonal relationships can ameliorate affective symptoms and prevent their return.”29,30
Continue to: FFT
FFT focuses on communication styles between patients and their spouses and families. The goal is to improve relationship functioning. FFT is delivered to the patient and the family.
Attention to social factors. For psychotherapy to provide adequate results as an adjunct to pharmacotherapy, social stressors (eg, homelessness and financial concerns) might also need to be considered and addressed through social services or a social work consult.
NICE guidelines recommend psychological intervention (in particular, with CBT and FFT) for acute BD. CANMAT–ISBD guidelines recommend either adjunctive psychoeducation, CBT, or FFT during the maintenance phase. Again, medication is the mainstay of treatment for BD in bipolar disorders; psychotherapy has an adjunctive role—unlike the approach to treatment of MDD, in which psychotherapy can be used alone in cases of mild, or even moderate, severity.
Referral for specialty care
In the primary care setting, providers might choose to manage BD by initiating first-line pharmacotherapeutic agents or continuing established treatment regimens with necessary dosage adjustments. These patients should be monitored closely until symptoms remit.
However, it is important for the primary care provider to identify patients who need psychiatric referral. Complex presentations, severe symptoms, and poor treatment response might warrant evaluation and management by a psychiatrist. Furthermore, patients with comorbid psychotic features, catatonia, or severely debilitating depression (with or without suicidality) need referral to the emergency department.
Continue to: Electroconvulsive therapy (ECT)
Electroconvulsive therapy (ECT). Patients might also need referral to Psychiatry for ECT, which is recommended by CANMAT–ISBD and JSMD guidelines as a second-line option; by the Royal Australian and New Zealand College of Psychiatrists as a third-line option; and by BAP for cases that are resistant to conventional treatment, with or without a high risk of suicide; in pregnancy; and in life-threatening situations.15,31,32
Telemedicine. There is a considerable shortage of mental health care professionals.33,34 The fact that nearly all (96%) counties in the United States have an unmet need for prescribers of mental health services (mainly psychiatrists) makes it crucial that primary care physicians be knowledgeable and prepared to manage BD—often with infrequent psychiatry consultation or, even, without psychiatry consultation. For primary care facilities that lack access to psychiatric services, telemedicine can be used as a consultative resource.
Psychiatric consultation using telemedicine technologies has provided significant cost savings for medical centers and decreased the likelihood of hospital admission,35 thereby alleviating health care costs and improving care, as shown in a rural Kansas county study.36 Furthermore, the burden on emergency departments in several states has been significantly reduced with psychiatric consultations via interactive telemedicine technologies.37
ACKNOWLEDGEMENT
Mark Yassa, BS, provided editing assistance.
CORRESPONDENCE
Nagy Youssef, MD, PhD, Medical College of Georgia at Augusta University, Department of Psychiatry and Health Behavior, 997 St. Sebastian Way, Augusta, GA 30912; nyoussef@augusta.edu.
Bipolar disorder is a prevalent disorder in the primary care setting.1,2 Primary care providers therefore commonly encounter bipolar depression (BD; a major depressive episode in the context of bipolar disorder), which might be (1) an emerging depressive episode in previously undiagnosed bipolar disorder or (2) a recurrent episode during the course of chronic bipolar illness.3,4
A primary care–based collaborative model has been identified as a potential strategy for effective management of chronic mental health conditions such as bipolar disorder.5,6 However, this collaborative treatment model isn’t widely available; many patients with bipolar disorder are, in fact, treated solely by their primary care provider.
Two years ago in this journal,7 we addressed how to precisely identify an episode of BD and differentiate it from major depressive disorder (MDD; also known as unipolar depression). In this review, in addition to advancing clinical knowledge of BD, we provide:
- an overview of treatment options for BD (in contrast to the treatment of unipolar depression)
- the pharmacotherapeutic know-how to initiate and maintain treatment for uncomplicated episodes of BD.
We do not discuss management of manic, hypomanic, and mixed episodes of bipolar disorder.
How to identify bipolar depression
Understanding the (sometimes) unclear distinction between bipolar I and bipolar II disorders in an individual patient is key to formulating a therapeutic regimen for BD.
Bipolar I disorder consists of manic episodes, alternating (more often than not) with depressive episodes. Bipolar I usually manifests first with a depressive episode.
Bipolar II disorder manifests with depressive episodes and hypomanic episodes (but never manic episodes).
Continue to: Depressive episodes in the bipolar disorders
Depressive episodes in the bipolar disorders. Bipolar depression can be seen in the settings of both bipolar I and II disorders. When a patient presents with a manic episode, a history of depressive episodes is common (although not essential) to diagnose bipolar I; alternatively, a history of hypomania (but no prior mania) and depression is needed to make the diagnosis of bipolar II. The natural history of the bipolar disorders is therefore alternating manic and almost always depressive episodes (bipolar I) and alternating hypomanic and always depressive episodes (bipolar II).8
Symptoms of hypomanic episodes are similar to what are seen in manic episodes, but are of shorter duration (≥ 4 days [episodes of mania are at least of 1 week’s duration]), lower intensity (no psychotic symptoms), and not associated with significant functional impairment or hospitalization. Table 17 further describes the differentiating features of bipolar I and bipolar II. A history of an unequivocal manic or hypomanic episode makes the diagnosis of BD relatively easy. However, an unclear history of manic or hypomanic symptoms or episodes frequently leads to misdiagnosis or underdiagnosis of BD.
In both bipolar I and II, it is depressive symptoms and episodes that place the greatest burden on patients across the lifespan: They are the most commonly experienced features of the bipolar disorders9,10 and lead to significant distress and functional impairment11; in fact, patients with bipolar disorder spend 3 (or more) times as long in depressive episodes as in manic or hypomanic episodes.12,13 In addition, subthreshold depressive symptoms occur commonly between major mood episodes.
Failure to identify and adequately treat depressive episodes of the bipolar disorders can have serious consequences: Patients are at risk of a worsening course of illness, alcohol use disorder, substance use disorder, chronic disability, mixed states, rapid cycling of mood episodes, and suicide.
Guidelines for treating bipolar depression
Despite the similarity in presenting symptoms and signs of depressive episodes in bipolar disorders and MDD, treating episodes of BD is significantly different than treating MDD. Antidepressant monotherapy, a mainstay of treatment for MDD, has limited utility in BD (especially depressive episodes of bipolar I) because of its limited efficacy and potential to destabilize mood, lead to rapid cycling, and induce mania or hypomania. Treatment options for BD include pharmacotherapy (the primary modality), psychological intervention (a useful adjunct, described later), and electroconvulsive therapy (ECT; highly worth considering in severe or treatment-resistant cases).
Continue to: For this article...
For this article, we searched PubMed and Google Scholar for guidelines for the management of bipolar disorders in adults that were published between July 2013 (when the US Food and Drug Administration [FDA] approved lurasidone for the treatment of BD) and March 2019. Related guideline-referenced articles and clinical trials were also reviewed.
Our search identified 6 guidelines issued during the search period, developed by the:
- Canadian Network for Mood and Anxiety Treatments (CANMAT) and International Society for Bipolar Disorders (ISBD),14
- British Association for Psychopharmacology (BAP),15
- Japanese Society of Mood Disorders (JSMD),16
- National Institute for Health and Care Excellence (NICE),17
- International College of Neuropsychopharmacology (CINP),18 and
- Royal Australian and New Zealand College of Psychiatrists.19
How to manage an episode of bipolar depression
First-line pharmacotherapeutic agents for the management of BD in acute bipolar I are listed and described in Table 2.4-19 Compared to the number of studies and reports on the management of BD in bipolar I, few studies have been conducted that specifically examine the treatment of BD in acute bipolar II. In practice, evidence from the treatment of BD in bipolar I has been extrapolated to the treatment of bipolar II depression. CANMAT–ISBD guidelines recommend quetiapine as the only first-line therapy for BD in bipolar II; JSMD, CINP, and NICE guidelines do not make distinct recommendations for treating BD in bipolar II.
Patients who have BD can present de novo (ie, not taking any medication for bipolar disorder) or with a breakthrough episode while on maintenance medication(s). In either case, monotherapy for BD is preferred, although combinations of medications (Table 214-19) can be more effective in some cases. Treatment guidelines overlap to a high degree, especially in regard to first-line treatments, but there is variation, especially beyond first-line therapeutics.20
The top recommended medications for BD are lithium, quetiapine, olanzapine, lamotrigine, and combined olanzapine/fluoxetine. FDA-approved agents for treating acute BD specifically include quetiapine, lurasidone, and combined olanzapine/fluoxetine. Guidelines generally recommend a first step of adjusting the dosage of medications in any established regimen before changing or adding other agents. If clinical improvement is not seen using any recommended medications, psychiatric referral is recommended. See Table 321,22 for dosing and titration guidance and highlights of both common and rare but serious adverse effects.
Continue to: Recommendations, best options for acute bipolar depression
Recommendations, best options for acute bipolar depression
Start with lithium, lamotrigine, quetiapine, or lurasidone as the first-line medication at the dosages given in Table 3.21,22 Olanzapine alone, or in combination with fluoxetine, can be used when it has been determined that the medications listed above are ineffective.
Note that lithium requires regular blood monitoring (Table 321,22). However, lithium has the advantage of strong supporting evidence of benefit in all mood episodes of bipolar disorders (depressive, manic, hypomanic), as well as maintenance, prevention of recurrence, and anti-suicidal properties.
Also of note: Lurasidone is much more costly than other recommended medications because it is available only by brand name in the United States; the other agents are available as generics. Consider generic equivalents of the recommended agents when cost is an important factor, in part because of the impact that cost has on medication adherence for some patients.
Last, olanzapine should be used later in the treatment algorithm, unless rapid control of symptoms is needed or other first-line medications are ineffective or not tolerated—given the higher propensity of the drug to produce weight gain and cause metabolic problems, including obesity and hyperglycemia.
The importance of maintenance therapy
Almost all patients with BD require maintenance treatment to prevent subsequent episodes, reduce residual symptoms, and restore functioning and quality of life. Maintenance therapy is formulated on the basis of efficacy and tolerability in the individual patient.
Continue to: As a general rule...
As a general rule, the strongest evidence for preventing recurrent BD episodes favors lithium—and most guidelines therefore support lithium as first-line maintenance therapy. It is important to note, however, that if a medication (or medications) successfully aborted an acute BD episode in a given patient, that agent (or agents) should be continued for maintenance purposes to prevent or minimize future episodes—generally, at the same dosage. First-line pharmacotherapeutic agents for the maintenance of bipolar disorder, and thus to prevent subsequent episodes of BD, are listed in Table 4.14-19
℞ antidepressantsin bipolar depression?
The use of antidepressants to treat BD remains a topic of ongoing deliberation. Antidepressant treatment of BD has historically raised concern for depressive relapse due to ineffectiveness and the ability of antidepressants to increase (1) the frequency of manic and hypomanic episodes23 and (2) mood instability in the form of induction of mixed states or rapid cycling. Among most authorities, the recommendation against using antidepressants for BD in both bipolar I and II is the same; however, limited evidence allows the use of antidepressant monotherapy in select cases of BD episodes in bipolar II,24,25 although not bipolar I.
The consensus in the field is that medications with mood-stabilizing effects should be considered as monotherapy before adding an antidepressant (if an antidepressant is to be added) to treat BD in bipolar II.26 In other words, if an antidepressant is to be used at all, it should be combined with a mood stabilizer or atypical antipsychotic15,27 and should probably not be used long term. The efficacy of antidepressants in treating BD in bipolar II should be assessed periodically at follow-up.
Nonpharmaceutical treatment options
Although pharmacotherapy is the mainstay of treatment of BD, adjunctive psychotherapy can be useful for treating acute BD episodes that occur during the maintenance phase of the disorder. Psychoeducation (ie, education on psychiatric illness and the importance of medication adherence), alone or in combination with interpersonal and social rhythm therapy (IPSRT), family-focused therapy (FFT), and cognitive behavioral therapy (CBT) can add to the overall efficacy of pharmacotherapy by lowering the risk of relapse and enhancing psychosocial functioning.28
IPSRT is supported by what is known as the instability model, which specifies that 3 interconnected pathways trigger recurrences of a bipolar episode: stressful life events, medication nonadherence, and social-rhythm disruption. IPSRT also uses principles of interpersonal psychotherapy that are applied in treating MDD, “arguing that improvement in interpersonal relationships can ameliorate affective symptoms and prevent their return.”29,30
Continue to: FFT
FFT focuses on communication styles between patients and their spouses and families. The goal is to improve relationship functioning. FFT is delivered to the patient and the family.
Attention to social factors. For psychotherapy to provide adequate results as an adjunct to pharmacotherapy, social stressors (eg, homelessness and financial concerns) might also need to be considered and addressed through social services or a social work consult.
NICE guidelines recommend psychological intervention (in particular, with CBT and FFT) for acute BD. CANMAT–ISBD guidelines recommend either adjunctive psychoeducation, CBT, or FFT during the maintenance phase. Again, medication is the mainstay of treatment for BD in bipolar disorders; psychotherapy has an adjunctive role—unlike the approach to treatment of MDD, in which psychotherapy can be used alone in cases of mild, or even moderate, severity.
Referral for specialty care
In the primary care setting, providers might choose to manage BD by initiating first-line pharmacotherapeutic agents or continuing established treatment regimens with necessary dosage adjustments. These patients should be monitored closely until symptoms remit.
However, it is important for the primary care provider to identify patients who need psychiatric referral. Complex presentations, severe symptoms, and poor treatment response might warrant evaluation and management by a psychiatrist. Furthermore, patients with comorbid psychotic features, catatonia, or severely debilitating depression (with or without suicidality) need referral to the emergency department.
Continue to: Electroconvulsive therapy (ECT)
Electroconvulsive therapy (ECT). Patients might also need referral to Psychiatry for ECT, which is recommended by CANMAT–ISBD and JSMD guidelines as a second-line option; by the Royal Australian and New Zealand College of Psychiatrists as a third-line option; and by BAP for cases that are resistant to conventional treatment, with or without a high risk of suicide; in pregnancy; and in life-threatening situations.15,31,32
Telemedicine. There is a considerable shortage of mental health care professionals.33,34 The fact that nearly all (96%) counties in the United States have an unmet need for prescribers of mental health services (mainly psychiatrists) makes it crucial that primary care physicians be knowledgeable and prepared to manage BD—often with infrequent psychiatry consultation or, even, without psychiatry consultation. For primary care facilities that lack access to psychiatric services, telemedicine can be used as a consultative resource.
Psychiatric consultation using telemedicine technologies has provided significant cost savings for medical centers and decreased the likelihood of hospital admission,35 thereby alleviating health care costs and improving care, as shown in a rural Kansas county study.36 Furthermore, the burden on emergency departments in several states has been significantly reduced with psychiatric consultations via interactive telemedicine technologies.37
ACKNOWLEDGEMENT
Mark Yassa, BS, provided editing assistance.
CORRESPONDENCE
Nagy Youssef, MD, PhD, Medical College of Georgia at Augusta University, Department of Psychiatry and Health Behavior, 997 St. Sebastian Way, Augusta, GA 30912; nyoussef@augusta.edu.
1. Cerimele JM, Chwastiak LA, Dodson S, et al. The prevalence of bipolar disorder in general primary care samples: a systematic review. Gen Hosp Psychiatry. 2014;36:19-25.
2. Stubbs B, Vancampfort D, Solmi M, et al. How common is bipolar disorder in general primary care attendees? A systematic review and meta-analysis investigating prevalence determined according to structured clinical assessments. Aust N Z J Psychiatry. 2016;50:631-639.
3. Carta MG, Norcini-Pala A, Moro MF, et al. Does mood disorder questionnaire identify sub-threshold bipolarity? Evidence studying worsening of quality of life. J Affect Disord. 2015;183:173-178.
4. Fonseca-Pedrero E, Ortuno-Sierra J, Paino M, et al. Screening the risk of bipolar spectrum disorders: validity evidence of the Mood Disorder Questionnaire in adolescents and young adults. Rev Psiquiatr Salud Ment. 2016;9:4-12.
5. Reilly S, Planner C, Gask L, et al. Collaborative care approaches for people with severe mental illness. Cochrane Database Syst Rev. 2013;(11):CD009531.
6. Woltmann E, Grogan-Kaylor A, Perron B, et al. Comparative effectiveness of collaborative chronic care models for mental health conditions across primary, specialty, and behavioral health care settings: systematic review and meta-analysis. Am J Psychiatry. 2012;169:790-804.
7. Aquadro E, Youssef NA. Combine these screening tools to detect bipolar depression. J Fam Pract. 2018;67:500-503.
8. Bipolar and related disorders. In: American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders (DSM-5). 5th ed. American Psychiatric Association Publishing; 2013:123.
9. Judd LL, Akiskal HS, Schettler PJ, et al. The comparative clinical phenotype and long term longitudinal episode course of bipolar I and II: a clinical spectrum or distinct disorders? J Affect Disord. 2013;73:19-32.
10. Judd LL, Akiskal HS, Schettler PJ, et al. The long-term natural history of the weekly symptomatic status of bipolar I disorder. Arch Gen Psychiatry. 2002;59:530-537.
11. Simon GE, Bauer MS, Ludman EJ, et al. Mood symptoms, functional impairment, and disability in people with bipolar disorder: specific effects of mania and depression. J Clin Psychiatry. 2007;68:1237-1245.
12. Judd LL, Schettler PJ, Akiskal HS, et al. Residual symptom recovery from major affective episodes in bipolar disorders and rapid episode relapse/recurrence. Arch Gen Psychiatry. 2008;65:386-394.
13. Judd LL, Schettler PJ, Solomon DA, et al. Psychosocial disability and work role function compared across the long-term course of bipolar I, bipolar II and unipolar major depressive disorders. J Affect Disord. 2008;108:49-58.
14. Yatham LN, Kennedy SH, Parikh S, et al. Canadian Network for Mood and Anxiety Treatments (CANMAT) and International Society for Bipolar Disorders (ISBD) 2018 guidelines for the management of patients with bipolar disorder. Bipolar Disord. 2018;20:97-170.
15. Goodwin GM, Haddad PM, Ferrier IN, et al. Evidence-based guidelines for treating bipolar disorder: revised third edition recommendations from the British Association for Psychopharmacology. J Psychopharmacol. 2016;30:495-553.
16. Kanba S, Kato T, Terao T, et al; Committee for Treatment Guidelines of Mood Disorders, Japanese Society of Mood Disorders, 2012. Guideline for treatment of bipolar disorder by the Japanese Society of Mood Disorders, 2012. Psychiatry Clin Neurosci. 2013;67:285-300.
17. National Institute for Health and Care Excellence. Bipolar disorder: assessment and management. Clinical Guideline CG185. September 24, 2014. www.nice.org.uk/guidance/cg185. Accessed August 17, 2020.
18. Fountoulakis KN, Grunze H, Vieta E, et al. The International College of Neuro-Psychopharmacology (CINP) Treatment Guidelines for Bipolar Disorder in Adults (CINP-BD-2017), Part 3: the clinical guidelines. Int J Neuropsychopharmacol. 2017;20:180-195.
19. Malhi GS, Outhred T, Morris G, et al. Royal Australian and New Zealand College of Psychiatrists clinical practice guidelines for mood disorders: bipolar disorder summary. Med J Aust. 2018;208:219-225.
20. Hammett S, Youssef NA. Systematic review of recent guidelines for pharmacological treatments of bipolar disorders in adults. Ann Clin Psychiatry. 2017;29:266-282.
21. Gabbard GO, ed. Gabbard’s Treatments of Psychiatric Disorders. 5th ed. American Psychiatric Association Publishing; 2014: chap 12-15.
22. National Health Service. Guidelines for the monitoring of antimanic and prophylactic medication in bipolar disorder. NHT policy number MM-G-023. 2009. http://fac.ksu.edu.sa/sites/default/files/bipolar_disorder_guidelines.pdf. Accessed August 17, 2020.
23. Geddes JR, Carney SM, Davies C, et al. Relapse prevention with antidepressant drug treatment in depressive disorders: a systematic review. Lancet. 2003;361:653-661.
24. Amsterdam JD, Lorenzo-Luaces L, Soeller I, et al. Safety and effectiveness of continuation antidepressant versus mood stabilizer monotherapy for relapse-prevention of bipolar II depression: a randomized, double-blind, parallel-group, prospective study. J Affect Disord. 2015;185:31-37.
25. Parker G, Tully L, Olley A, et al. SSRIs as mood stabilizers for bipolar II disorder? A proof of concept study. J Affect Disord. 2006;92:205-214.
26. Pacchiarotti I, Bond DJ, Baldessarini RJ, et al. The International Society for Bipolar Disorders (ISBD) Task Force report on antidepressant use in bipolar disorders. Am J Psychiatry. 2013;170:1249-1262.
27. Royal Australian and New Zealand College of Psychiatrists Clinical Practice Guidelines Team for Bipolar Disorder. Australian and New Zealand clinical practice guidelines for the treatment of bipolar disorder. Aust N Z J Psychiatry. 2004;38:280-305.
28. Chiang K-J, Tsai J-C, Liu D, et al. Efficacy of cognitive-behavioral therapy in patients with bipolar disorder: a meta-analysis of randomized controlled trials. PLoS One. 2017;12:e0176849.
29. de Mello MF, de Jesus Mari J, Bacaltchuk J, et al. A systematic review of research findings on the efficacy of interpersonal therapy for depressive disorders. Eur Arch Psychiatry Clin Neurosci. 2005;255:75-82.
30. Zhou X, Teng T, Zhang Y, et al. Comparative efficacy and acceptability of antidepressants, psychotherapies, and their combination for acute treatment of children and adolescents with depressive disorder: a systematic review and network meta-analysis. Lancet Psychiatry. 2020;7:581-601.
31. Daly JJ, Prudic J, Devanand DP, et al. ECT in bipolar and unipolar depression: differences in speed of response. Bipolar Disord. 2001;3:95-104.
32. Medda P, Perugi G, Zanello S, et al. Response to ECT in bipolar I, bipolar II and unipolar depression. J Affect Disord. 2009;118:55-59.
33. Ellis AR, Konrad TR, Thomas KC, et al. County-level estimates of mental health professional supply in the United States. Psychiatr Serv. 2009;60:1315-1322.
34. Thomas KC, Ellis AR, Konrad TR, et al. County-level estimates of mental health professional shortage in the United States. Psychiatr Serv. 2009;60:1323-1328.
35. Narasimhan M, Druss BG, Hockenberry JM, et al. Impact of a telepsychiatry program at emergency departments statewide on the quality, utilization, and costs of mental health services. Psychiatr Serv. 2015;66:1167-1172.
36. Spaulding R, Belz N, DeLurgio S, et al. Cost savings of telemedicine utilization for child psychiatry in a rural Kansas community. Telemed J E Health. 2010;16:867-871.
37. States leverage telepsychiatry solutions to ease ED crowding, accelerate care. ED Manag. 2015;27:13-17.
1. Cerimele JM, Chwastiak LA, Dodson S, et al. The prevalence of bipolar disorder in general primary care samples: a systematic review. Gen Hosp Psychiatry. 2014;36:19-25.
2. Stubbs B, Vancampfort D, Solmi M, et al. How common is bipolar disorder in general primary care attendees? A systematic review and meta-analysis investigating prevalence determined according to structured clinical assessments. Aust N Z J Psychiatry. 2016;50:631-639.
3. Carta MG, Norcini-Pala A, Moro MF, et al. Does mood disorder questionnaire identify sub-threshold bipolarity? Evidence studying worsening of quality of life. J Affect Disord. 2015;183:173-178.
4. Fonseca-Pedrero E, Ortuno-Sierra J, Paino M, et al. Screening the risk of bipolar spectrum disorders: validity evidence of the Mood Disorder Questionnaire in adolescents and young adults. Rev Psiquiatr Salud Ment. 2016;9:4-12.
5. Reilly S, Planner C, Gask L, et al. Collaborative care approaches for people with severe mental illness. Cochrane Database Syst Rev. 2013;(11):CD009531.
6. Woltmann E, Grogan-Kaylor A, Perron B, et al. Comparative effectiveness of collaborative chronic care models for mental health conditions across primary, specialty, and behavioral health care settings: systematic review and meta-analysis. Am J Psychiatry. 2012;169:790-804.
7. Aquadro E, Youssef NA. Combine these screening tools to detect bipolar depression. J Fam Pract. 2018;67:500-503.
8. Bipolar and related disorders. In: American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders (DSM-5). 5th ed. American Psychiatric Association Publishing; 2013:123.
9. Judd LL, Akiskal HS, Schettler PJ, et al. The comparative clinical phenotype and long term longitudinal episode course of bipolar I and II: a clinical spectrum or distinct disorders? J Affect Disord. 2013;73:19-32.
10. Judd LL, Akiskal HS, Schettler PJ, et al. The long-term natural history of the weekly symptomatic status of bipolar I disorder. Arch Gen Psychiatry. 2002;59:530-537.
11. Simon GE, Bauer MS, Ludman EJ, et al. Mood symptoms, functional impairment, and disability in people with bipolar disorder: specific effects of mania and depression. J Clin Psychiatry. 2007;68:1237-1245.
12. Judd LL, Schettler PJ, Akiskal HS, et al. Residual symptom recovery from major affective episodes in bipolar disorders and rapid episode relapse/recurrence. Arch Gen Psychiatry. 2008;65:386-394.
13. Judd LL, Schettler PJ, Solomon DA, et al. Psychosocial disability and work role function compared across the long-term course of bipolar I, bipolar II and unipolar major depressive disorders. J Affect Disord. 2008;108:49-58.
14. Yatham LN, Kennedy SH, Parikh S, et al. Canadian Network for Mood and Anxiety Treatments (CANMAT) and International Society for Bipolar Disorders (ISBD) 2018 guidelines for the management of patients with bipolar disorder. Bipolar Disord. 2018;20:97-170.
15. Goodwin GM, Haddad PM, Ferrier IN, et al. Evidence-based guidelines for treating bipolar disorder: revised third edition recommendations from the British Association for Psychopharmacology. J Psychopharmacol. 2016;30:495-553.
16. Kanba S, Kato T, Terao T, et al; Committee for Treatment Guidelines of Mood Disorders, Japanese Society of Mood Disorders, 2012. Guideline for treatment of bipolar disorder by the Japanese Society of Mood Disorders, 2012. Psychiatry Clin Neurosci. 2013;67:285-300.
17. National Institute for Health and Care Excellence. Bipolar disorder: assessment and management. Clinical Guideline CG185. September 24, 2014. www.nice.org.uk/guidance/cg185. Accessed August 17, 2020.
18. Fountoulakis KN, Grunze H, Vieta E, et al. The International College of Neuro-Psychopharmacology (CINP) Treatment Guidelines for Bipolar Disorder in Adults (CINP-BD-2017), Part 3: the clinical guidelines. Int J Neuropsychopharmacol. 2017;20:180-195.
19. Malhi GS, Outhred T, Morris G, et al. Royal Australian and New Zealand College of Psychiatrists clinical practice guidelines for mood disorders: bipolar disorder summary. Med J Aust. 2018;208:219-225.
20. Hammett S, Youssef NA. Systematic review of recent guidelines for pharmacological treatments of bipolar disorders in adults. Ann Clin Psychiatry. 2017;29:266-282.
21. Gabbard GO, ed. Gabbard’s Treatments of Psychiatric Disorders. 5th ed. American Psychiatric Association Publishing; 2014: chap 12-15.
22. National Health Service. Guidelines for the monitoring of antimanic and prophylactic medication in bipolar disorder. NHT policy number MM-G-023. 2009. http://fac.ksu.edu.sa/sites/default/files/bipolar_disorder_guidelines.pdf. Accessed August 17, 2020.
23. Geddes JR, Carney SM, Davies C, et al. Relapse prevention with antidepressant drug treatment in depressive disorders: a systematic review. Lancet. 2003;361:653-661.
24. Amsterdam JD, Lorenzo-Luaces L, Soeller I, et al. Safety and effectiveness of continuation antidepressant versus mood stabilizer monotherapy for relapse-prevention of bipolar II depression: a randomized, double-blind, parallel-group, prospective study. J Affect Disord. 2015;185:31-37.
25. Parker G, Tully L, Olley A, et al. SSRIs as mood stabilizers for bipolar II disorder? A proof of concept study. J Affect Disord. 2006;92:205-214.
26. Pacchiarotti I, Bond DJ, Baldessarini RJ, et al. The International Society for Bipolar Disorders (ISBD) Task Force report on antidepressant use in bipolar disorders. Am J Psychiatry. 2013;170:1249-1262.
27. Royal Australian and New Zealand College of Psychiatrists Clinical Practice Guidelines Team for Bipolar Disorder. Australian and New Zealand clinical practice guidelines for the treatment of bipolar disorder. Aust N Z J Psychiatry. 2004;38:280-305.
28. Chiang K-J, Tsai J-C, Liu D, et al. Efficacy of cognitive-behavioral therapy in patients with bipolar disorder: a meta-analysis of randomized controlled trials. PLoS One. 2017;12:e0176849.
29. de Mello MF, de Jesus Mari J, Bacaltchuk J, et al. A systematic review of research findings on the efficacy of interpersonal therapy for depressive disorders. Eur Arch Psychiatry Clin Neurosci. 2005;255:75-82.
30. Zhou X, Teng T, Zhang Y, et al. Comparative efficacy and acceptability of antidepressants, psychotherapies, and their combination for acute treatment of children and adolescents with depressive disorder: a systematic review and network meta-analysis. Lancet Psychiatry. 2020;7:581-601.
31. Daly JJ, Prudic J, Devanand DP, et al. ECT in bipolar and unipolar depression: differences in speed of response. Bipolar Disord. 2001;3:95-104.
32. Medda P, Perugi G, Zanello S, et al. Response to ECT in bipolar I, bipolar II and unipolar depression. J Affect Disord. 2009;118:55-59.
33. Ellis AR, Konrad TR, Thomas KC, et al. County-level estimates of mental health professional supply in the United States. Psychiatr Serv. 2009;60:1315-1322.
34. Thomas KC, Ellis AR, Konrad TR, et al. County-level estimates of mental health professional shortage in the United States. Psychiatr Serv. 2009;60:1323-1328.
35. Narasimhan M, Druss BG, Hockenberry JM, et al. Impact of a telepsychiatry program at emergency departments statewide on the quality, utilization, and costs of mental health services. Psychiatr Serv. 2015;66:1167-1172.
36. Spaulding R, Belz N, DeLurgio S, et al. Cost savings of telemedicine utilization for child psychiatry in a rural Kansas community. Telemed J E Health. 2010;16:867-871.
37. States leverage telepsychiatry solutions to ease ED crowding, accelerate care. ED Manag. 2015;27:13-17.
PRACTICE RECOMMENDATIONS
› Become knowledgeable in identifying an episode of bipolar depression and differentiating it from major depressive disorder, so as to provide effective treatment for bipolar depression. A
› Begin treatment of bipolar depression with one of the recommended first-line medications, especially lithium, lamotrigine, quetiapine, or lurasidone. A
› Treat bipolar II depression similar to the way bipolar I depression is treated: primarily, using a mood stabilizer alone or, occasionally, using a mood stabilizer plus an antidepressant. B
Strength of recommendation (SOR)
A Good-quality patient-oriented evidence
B Inconsistent or limited-quality patient-oriented evidence
C Consensus, usual practice, opinion, disease-oriented evidence, case series
Managing food allergy in children: An evidence-based update
Food allergy is a complex condition that has become a growing concern for parents and an increasing public health problem in the United States. Food allergy affects social interactions, school attendance, and quality of life, especially when associated with comorbid atopic conditions such as asthma, atopic dermatitis, and allergic rhinitis.1,2 It is the major cause of anaphylaxis in children, accounting for as many as 81% of cases.3 Societal costs of food allergy are great and are spread broadly across the health care system and the family. (See “What is the cost of food allergy?”2.)
SIDEBAR
What is the cost of food allergy?
Direct costs of food allergy to the health care system include medications, laboratory tests, office visits to primary care physicians and specialists, emergency department visits, and hospitalizations. Indirect costs include family medical and nonmedical expenses, lost work productivity, and job opportunity costs. Overall, the cost of food allergy in the United States is $24.8 billion annually—averaging $4184 for each affected child. Parents bear much of this expense.2
What a food allergy is—and isn’t
The National Institute of Allergy and Infectious Diseases (NIAID) defines food allergy as “an adverse health effect arising from a specific immune response that occurs reproducibly on exposure to a given food.”4 An adverse reaction to food or a food component that lacks an identified immunologic pathophysiology is not considered food allergy but is classified as food intolerance.4
Food allergy is caused by either immunoglobulin E (IgE)-mediated or non-IgE-mediated immunologic dysfunction. IgE antibodies can trigger an intense inflammatory response to certain allergens. Non-IgE-mediated food allergies are less common and not well understood.
This article focuses only on the diagnosis and management of IgE-mediated food allergy.
The culprits
More than 170 foods have been reported to cause an IgE-mediated reaction. Table 15-8 lists the 8 foods that most commonly cause allergic reactions in the United States and that account for > 50% of allergies to food.9 Studies vary in their methodology for estimating the prevalence of allergy to individual foods, but cow’s milk and peanuts appear to be the most common, each affecting as many as 2% to 2.5% of children.7,8 In general, allergies to cow’s milk and to eggs are more prevalent in very young and preschool children, whereas allergies to peanuts, tree nuts, fish, and shellfish are more prevalent in older children.10 Labels on all packaged foods regulated by the US Food and Drug Administration must declare if the product contains even a trace of these 8 allergens.
How common is food allergy?
The Centers for Disease Control and Prevention (CDC) estimates that 4% to 6% of children in the United States have a food allergy.11,12 Almost 40% of food-allergic children have a history of severe food-induced reactions.13 Other developed countries cite similar estimates of overall prevalence.14,15
However, many estimates of the prevalence of food allergy are derived from self-reports, without objective data.9 Accurate evaluation of the prevalence of food allergy is challenging because of many factors, including differences in study methodology and the definition of allergy, geographic variation, racial and ethnic variations, and dietary exposure. Parents and children often confuse nonallergic food reactions, such as food intolerance, with food allergy. Precise determination of the prevalence and natural history of food allergy at the population level requires confirmatory oral food challenges of a representative sample of infants and young children with presumed food allergy.16
Continue to: The CDC concludes that the prevalence...
The CDC concludes that the prevalence of food allergy in children younger than 18 years increased by 18% from 1997 through 2007.17,18 The cause of this increase is unclear but likely multifactorial; hypotheses include an increase in associated atopic conditions, delayed introduction of allergenic foods, and living in an overly sterile environment with reduced exposure to microbes.19 A recent population-based study of food allergy among children in Olmsted County, Minnesota, found that the incidence of food allergy increased between 2002 and 2007, stabilized subsequently, and appears to be declining among children 1 to 4 years of age, following a peak in 2006-2007.19
What are the risk factors?
Proposed risk factors for food allergy include demographics, genetics, a history of atopic disease, and environmental factors. Food allergy might be more common in boys than in girls, and in African Americans and Asians than in Whites.12,16 A child is 7 times more likely to be allergic to peanuts if a parent or sibling has peanut allergy.20 Infants and children with eczema or asthma are more likely to develop food allergy; the severity of eczema correlates with risk.12,20 Improvements in hygiene in Western societies have decreased the spread of infection, but this has been accompanied by a rise in atopic disease. In countries where health standards are poor and exposure to pathogens is greater, the prevalence of allergy is low.21
Conversely, increased microbial exposure might help protect against atopy via a pathway in which T-helper cells prevent pro-allergic immune development and keep harmless environmental exposures from becoming allergens.22 Attendance at daycare and exposure to farm animals early in life reduces the likelihood of atopic disease.16,21 The presence of a dog in the home lessens the probability of egg allergy in infants.23 Food allergy is less common in younger siblings than in first-born children, possibly due to younger siblings’ increased exposure to infection and alterations in the gut microbiome.23,24
Diagnosis: Established by presentation, positive testing
Onset of symptoms after exposure to a suspected food allergen almost always occurs within 2 hours and, typically, resolves within several hours. Symptoms should occur consistently after ingestion of the food allergen. Subsequent exposures can trigger more severe symptoms, depending on the amount, route, and duration of exposure to the allergen.25 Reactions typically follow ingestion or cutaneous exposures; inhalation rarely triggers a response.26 IgE-mediated release of histamine and other mediators from mast cells and basophils triggers reactions that typically involve one or more organ systems (Table 2).25
Cutaneous symptoms are the most common manifestations of food allergy, occurring in 70% to 80% of childhood reactions. Gastrointestinal and oral or respiratory symptoms occur in, respectively, 40% to 50% and 25% of allergic reactions to food. Cardiovascular symptoms develop in fewer than 10% of allergic reactions.26
Continue to: Anaphylaxis
Anaphylaxis is a serious allergic reaction that develops rapidly and can cause death; diagnosis is based on specific criteria (Table 3).27 Data for rates of anaphylaxis due to food allergy are limited. The incidence of fatal reaction due to food allergy is estimated to be 1 in every 800,000 children annually.3
Clinical suspicion. Food allergy should be suspected in infants and children who present with anaphylaxis or other symptoms (Table 225) that occur within minutes to hours of ingesting food.4 Parental and self-reports alone are insufficient to diagnose food allergy. NIAID guidelines recommend that patient reports of food allergy be confirmed, because multiple studies demonstrate that 50% to 90% of presumed food allergies are not true allergy.4 Health care providers must obtain a detailed medical history and pertinent family history, plus perform a physical exam and allergy sensitivity testing. Methods to help diagnose food allergies include skin-prick tests, allergen-specific serum IgE tests, and oral food challenges.4
General principles and utility of testing
Before ordering tests, it’s important to distinguish between food sensitization and food allergy and to inform the families of children with suspected food allergy about the limitations of skin-prick tests and serum IgE tests. A child with IgE antibodies specific to a food or with a positive skin-prick test, but without symptoms upon ingestion of the food, is merely sensitized; food allergy indicates the appearance of symptoms following exposure to a specific food, in addition to the detection of specific IgE antibodies or a positive skin-prick test to that same food.28
Skin-prick testing. Skin-prick tests can be performed at any age. The procedure involves pricking or scratching the surface of the skin, usually the volar aspect of the forearm or the back, with a commercial extract. Testing should be performed by a physician or other provider who is properly trained in the technique and in interpreting results. The extract contains specific allergenic proteins that activate mast cells, resulting in a characteristic wheal-and-flare response that is typically measured 15 to 20 minutes after application. Some medications, such as H1- and H2-receptor blockers and tricyclic antidepressants, can interfere with results and need to be held for 3 to 5 days before testing.
A positive skin-prick test result is defined as a wheal ≥ 3 mm larger in diameter than the negative control. The larger the size of the wheal, the higher the likelihood of a reaction to the tested food.29 Patients who exhibit dermatographism might experience a wheal-and-flare response from the action of the skin-prick test, rather than from food-specific IgE antibodies. A negative skin-prick test has > 90% negative predictive value, so the test can rule out suspected food allergy.30 However, the skin-prick test alone cannot be used to diagnose food allergy because it has a high false-positive rate.
Continue to: Allergen-specific serum IgE testing
Allergen-specific serum IgE testing. Measurement of food-specific serum IgE levels is routinely available and requires only a blood specimen. The test can be used in patients with skin disease, and results are not affected by concurrent medications. The presence of food-specific IgE indicates that the patient is sensitized to that allergen and might react upon exposure; children with a higher level of antibody are more likely to react.29
Food-specific serum IgE tests are sensitive but nonspecific for food allergy.31 Broad food-allergy test panels often yield false-positive results that can lead to unnecessary dietary elimination, resulting in years of inconvenience, nutrition problems, and needless health care expense.32
It is appropriate to order tests of specific serum IgE to foods ingested within the 2 to 3–hour window before onset of symptoms to avoid broad food allergy test panels. Like skin-prick testing, positive allergen-specific serum IgE tests alone cannot diagnose food allergy.
Oral food challenge. The double-blind, placebo-controlled oral food challenge is the gold standard for the diagnosis of food allergy. Because this test is time-consuming and technically difficult, single-blind or open food challenges are more common. Oral food challenges should be performed only by a physician or other provider who can identify and treat anaphylaxis.
The oral challenge starts with a very low dose of suspected food allergen, which is gradually increased every 15 to 30 minutes as vital signs are monitored carefully. Patients are observed for an allergic reaction for 1 hour after the final dose.
Continue to: A retrospective study...
A retrospective study showed that, whereas 19% of patients reacted during an open food challenge, only 2% required epinephrine.33 Another study showed that 89% of children whose serum IgE testing was positive for specific foods were able to reintroduce those foods into the diet after a reassuring oral food challenge.34
Other diagnostic tests. The basophil activation assay, measurement of total serum IgE, atopy patch tests, and intradermal tests have been used, but are not recommended, for making the diagnosis of food allergy.4
How can food allergy be managed?
Medical options are few. No approved treatment exists for food allergy. However, it’s important to appropriately manage acute reactions and reduce the risk of subsequent reactions.1 Parents or other caregivers can give an H1 antihistamine, such as diphenhydramine, to infants and children with acute non-life-threatening symptoms. More severe symptoms require rapid administration of epinephrine.1 Auto-injectable epinephrine should be prescribed for parents and caregivers to use as needed for emergency treatment of anaphylaxis.
Team approach. A multidisciplinary approach to managing food allergy—involving physicians, school nurses, dietitians, and teachers, and using educational materials—is ideal. This strategy expands knowledge about food allergies, enhances correct administration of epinephrine, and reduces allergic reactions.1
Avoidance of food allergens can be challenging. Parents and caregivers should be taught to interpret the list of ingredients on food packages. Self-recognition of allergic reactions reduces the likelihood of a subsequent severe allergic reaction.35
Continue to: Importance of individualized care
Importance of individualized care. Health care providers should develop personalized management plans for their patients.1 (A good place to start is with the “Food Allergy & Anaphylaxis Emergency Care Plan”a developed by Food Allergy Research & Education [FARE]). Keep in mind that children with multiple food allergies consume less calcium and protein, and tend to be shorter4; therefore, it’s wise to closely monitor growth in these children and consider referral to a dietitian who is familiar with food allergy.
Potential of immunotherapy. Current research focuses on immunotherapy to induce tolerance to food allergens and protect against life-threatening allergic reactions. The goal of immunotherapy is to lessen adverse reactions to allergenic food proteins; the strategy is to have patients repeatedly ingest small but gradually increasing doses of the food allergen over many months.36 Although immunotherapy has successfully allowed some patients to consume larger quantities of a food without having an allergic reaction, it is unknown whether immunotherapy provides permanent resolution of food allergy. In addition, immunotherapy often causes serious systemic and local reactions.1,36,37
Is prevention possible?
Maternal diet during pregnancy and lactation does not affect development of food allergy in infants.38,39 Breastfeeding might prevent development of atopic disease, but evidence is insufficient to determine whether breastfeeding reduces the likelihood of food allergy.39 In nonbreastfed infants at high risk of food allergy, extensively or partially hydrolyzed formula might help protect against food allergy, compared to standard cow’s milk formula.9,39 Feeding with soy formula rather than cow’s milk formula does not help prevent food allergy.39,40 Pregnant and breastfeeding women should not restrict their diet as a means of preventing food allergy.39
Diet in infancy. Over the years, physicians have debated the proper timing of the introduction of solid foods into the diet of infants. Traditional teaching advocated delaying introduction of potentially allergenic foods to reduce the risk of food allergy; however, this guideline was based on inconsistent evidence,41 and the strategy did not reduce the incidence of food allergy. The prevalence of food allergy is lower in developing countries where caregivers introduce foods to infants at an earlier age.20
A recent large clinical trial indicates that early introduction of peanut-containing foods can help prevent peanut allergy. The study randomized 4- to 11-month-old infants with severe eczema, egg allergy, or both, to eat or avoid peanut products until 5 years of age. Infants assigned to eat peanuts were 81% less likely to develop peanut allergy than infants in the avoidance group. Absolute risk reduction was 14% (number need to treat = 7).42 Another study showed a nonsignificant (20%) lower relative risk of food allergy in breastfed infants who were fed potentially allergenic foods starting at 3 months of age, compared to being exclusively breastfed.43
Continue to: Based on these data...
Based on these data,42,43 NIAID instituted recommendations in 2017 aimed at preventing peanut allergy44:
- In healthy infants without known food allergy and those with mild or moderate eczema, caregivers can introduce peanut-containing foods at home with other solid foods.Parents who are anxious about a possible allergic reaction can introduce peanut products in a physician’s office.
- Infants at high risk of peanut allergy (those with severe eczema or egg allergy, or both) should undergo peanut-specific IgE or skin-prick testing:
- Negative test: indicates low risk of a reaction to peanuts; the infant should start consuming peanut-containing foods at 4 to 6 months of age, at home or in a physician’s office, depending on the parents’ preference
- Positive test: Referral to an allergist is recommended.
Do children outgrow food allergy?
Approximately 85% of children who have an allergy to milk, egg, soy, or wheat outgrow their allergy; however, only 15% to 20% who have an allergy to peanuts, tree nuts, fish, or shellfish eventually tolerate these foods. The time to resolution of food allergy varies with the food, and might not occur until adolescence.4 No test reliably predicts which children develop tolerance to any given food. A decrease in the food-specific serum IgE level or a decrease in the size of the wheal on skin-prick testing might portend the onset of tolerance to the food.4
CORRESPONDENCE
Catherine M. Bettcher, MD, FAAFP, Briarwood Family Medicine, 1801 Briarwood Circle, Building #10, Ann Arbor, MI 48108; cbettche@umich.edu.
1. Muraro A, Werfel T, Hoffmann-Sommergruber K, et al; . EAACI food allergy and anaphylaxis guidelines: diagnosis and management of food allergy. Allergy. 2014;69:1008-1025.
2. Gupta R, Holdford D, Bilaver L, et al. The economic impact of childhood food allergy in the United States. JAMA Pediatr. 2013;167:1026-1031.
3. Cianferoni A, Muraro A. Food-induced anaphylaxis. Immunol Allergy Clin North Am. 2012;32:165-195.
4., Boyce JA, Assa’ad A, Burks WA, et al. Guidelines for the diagnosis and management of food allergy in the United States: report of the NIAID-sponsored expert panel. J Allergy Clin Immunol. 2010;126(6 suppl):S1-S58.
5. Vierk KA, Koehler KM, Fein SB, et al. Prevalence of self-reported food allergy in American adults and use of food labels. J Allergy Clin Immunol. 2007;119:1504-1510.
6. Allen KJ, Koplin JJ. The epidemiology of IgE-mediated food allergy and anaphylaxis. Immunol Allergy Clin North Am. 2012;32:35-50.
7. Iweala OI, Choudhary SK, Commins SP. Food allergy. Curr Gastroenterol Rep. 2018;20:17.
8. Gupta RS, Warren CM, Smith BM, et al. The public health impact of parent-reported childhood food allergies in the United States. Pediatrics. 2018;142:e20181235.
9. Chafen JJS, Newberry SJ, Riedl MA, et al. Diagnosing and managing common food allergies: a systematic review. JAMA. 2010;303:1848-1856.
10. Nwaru BI, Hickstein L, Panesar SS, et al. Prevalence of common food allergies in Europe: a systematic review and meta-analysis. Allergy. 2014;69:992-1007.
11. Branum AM, Lukacs SL. Food allergy among U.S. children: trends in prevalence and hospitalizations. NCHS Data Brief No. 10. National Center for Health Statistics. October 2008. www.cdc.gov/nchs/products/databriefs/db10.htm. Accessed August 19, 2020.
12. Liu AH, Jaramillo R, Sicherer SH, et al. National prevalence and risk factors for food allergy and relationship to asthma: results from the National Health and Nutrition Examination Survey 2005-2006. J Allergy Clin Immunol. 2010;126:798-806.e13.
13. Gupta RS, Springston EE, Warrier MR, et al. The prevalence, severity, and distribution of childhood food allergy in the United States. Pediatrics. 2011;128:e9-e17.
14. Soller L, Ben-Shoshan M, Harrington DW, et al. Overall prevalence of self-reported food allergy in Canada. J Allergy Clin Immunol. 2012;130:986-988.
15. Venter C, Pereira B, Voigt K, et al. Prevalence and cumulative incidence of food hypersensitivity in the first 3 years of life. Allergy. 2008;63:354-359.
16. Savage J, Johns CB. Food allergy: epidemiology and natural history. Immunol Allergy Clin North Am. 2015;35:45-59.
17. Branum AM, Lukacs SL. Food allergy among children in the United States. Pediatrics. 2009;124:1549-1555.
18. Jackson KD, Howie LD, Akinbami LJ. Trends in allergic conditions among children: United States, 1997-2011. NCHS Data Brief No. 121. National Center for Health Statistics. May 2013. www.cdc.gov/nchs/products/databriefs/db121.htm. Accessed August 19, 2020.
19. Willits EK, Park MA, Hartz MF, et al. Food allergy: a comprehensive population-based cohort study. Mayo Clin Proc. 2018;93:1423-1430.
20. Lack G. Epidemiologic risks for food allergy. J Allergy Clin Immunol. 2008;121:1331-1336.
21. Okada H, Kuhn C, Feillet H, et al. The ‘hygiene hypothesis’ for autoimmune and allergic diseases: an update. Clin Exp Immunol. 2010;160:1-9.
22. Liu AH. Hygiene theory and allergy and asthma prevention. Paediatr Perinat Epidemiol. 2007;21 Suppl 3:2-7.
23. Prince BT, Mandel MJ, Nadeau K, et al. Gut microbiome and the development of food allergy and allergic disease. Pediatr Clin North Am. 2015;62:1479-1492.
24. Kusunoki T, Mukaida K, Morimoto T, et al. Birth order effect on childhood food allergy. Pediatr Allergy Immunol. 2012;23:250-254.
25. Abrams EM, Sicherer SH. Diagnosis and management of food allergy. CMAJ. 2016;188:1087-1093.
26. Perry TT, Matsui EC, Conover-Walker MK, et al. Risk of oral food challenges. J Allergy Clin Immunol. 2004;114:1164-1168.
27. Sampson HA, A, Campbell RL, et al. Second symposium on the definition and management of anaphylaxis: summary report—Second National Institute of Allergy and Infectious Disease/Food Allergy and Anaphylaxis Network symposium. J Allergy Clin Immunol. 2006;117:391-397.
28. Sampson HA. Food allergy. Part 2: diagnosis and management. J Allergy Clin Immunol. 1999;103:981-989.
29. Lieberman JA, Sicherer SH. Diagnosis of food allergy: epicutaneous skin tests, in vitro tests, and oral food challenge. Curr Allergy Asthma Rep. 2011;11:58-64.
30. Sicherer SH, Sampson HA. Food allergy. J Allergy Clin Immunol. 2010;125(2 suppl 2):S116-S125.
31. Soares-Weiser K, Takwoingi Y, Panesar SS, et al. The diagnosis of food allergy: a systematic review and meta-analysis. Allergy. 2014;69:76-86.
32. Bird JA, Crain M, Varshney P. Food allergen panel testing often results in misdiagnosis of food allergy. J Pediatr. 2015;166:97-100.
33. Lieberman JA, Cox AL, Vitale M, et al. Outcomes of office-based, open food challenges in the management of food allergy. J Allergy Clin Immunol. 2011;128:1120-1122.
34. Fleischer DM, Bock SA, Spears GC, et al. Oral food challenges in children with a diagnosis of food allergy. J Pediatr. 2011;158:578-583.e1.
35. Ewan PW, Clark AT. Long-term prospective observational study of patients with peanut and nut allergy after participation in a management plan. Lancet. 2001;357:111-115.
36. Nurmatov U, Dhami S, Arasi S, et al. Allergen immunotherapy for IgE-mediated food allergy: a systematic review and meta-analysis. Allergy. 2017;72:1133-1147.
37. Sampson HA, Aceves S, Bock SA, et al. Food allergy: a practice parameter update—2014. J Allergy Clin Immunol. 2014;134:1016-1025.e43.
38. Kramer MS, Kakuma R. Maternal dietary antigen avoidance during pregnancy or lactation, or both, for preventing or treating atopic disease in the child. Cochrane Database Syst Rev. 2012;2012(9):CD000133.
39. de Silva D, Geromi M, Halken S, et al; . Primary prevention of food allergy in children and adults: systematic review. Allergy. 2014;69:581-589.
40. Osborn DA, Sinn J. Soy formula for prevention of allergy and food intolerance in infants. Cochrane Database Syst Rev. 2004;(3):CD003741.
41. Filipiak B, Zutavern A, Koletzko S, et al; GINI-Group. Solid food introduction in relation to eczema: results from a four-year prospective birth cohort study. J Pediatr. 2007;151:352-358.
42. Du Toit G, Roberts G, Sayre PH, et al; LEAP Study Team. Randomized trial of peanut consumption in infants at risk for peanut allergy. N Engl J Med. 2015;372:803-813.
43. Perkin MR, Logan K, Tseng A, et al; EAT Study Team. Randomized trial of introduction of allergenic foods in breast-fed infants. N Engl J Med. 2016;374:1733-1743.
44. Togias A, Cooper SF, Acebal ML, et al. Addendum guidelines for the prevention of peanut allergy in the United States: report of the National Institute of Allergy and Infectious Diseases-sponsored expert panel. J Allergy Clin Immunol. 2017;139:29-44.
Food allergy is a complex condition that has become a growing concern for parents and an increasing public health problem in the United States. Food allergy affects social interactions, school attendance, and quality of life, especially when associated with comorbid atopic conditions such as asthma, atopic dermatitis, and allergic rhinitis.1,2 It is the major cause of anaphylaxis in children, accounting for as many as 81% of cases.3 Societal costs of food allergy are great and are spread broadly across the health care system and the family. (See “What is the cost of food allergy?”2.)
SIDEBAR
What is the cost of food allergy?
Direct costs of food allergy to the health care system include medications, laboratory tests, office visits to primary care physicians and specialists, emergency department visits, and hospitalizations. Indirect costs include family medical and nonmedical expenses, lost work productivity, and job opportunity costs. Overall, the cost of food allergy in the United States is $24.8 billion annually—averaging $4184 for each affected child. Parents bear much of this expense.2
What a food allergy is—and isn’t
The National Institute of Allergy and Infectious Diseases (NIAID) defines food allergy as “an adverse health effect arising from a specific immune response that occurs reproducibly on exposure to a given food.”4 An adverse reaction to food or a food component that lacks an identified immunologic pathophysiology is not considered food allergy but is classified as food intolerance.4
Food allergy is caused by either immunoglobulin E (IgE)-mediated or non-IgE-mediated immunologic dysfunction. IgE antibodies can trigger an intense inflammatory response to certain allergens. Non-IgE-mediated food allergies are less common and not well understood.
This article focuses only on the diagnosis and management of IgE-mediated food allergy.
The culprits
More than 170 foods have been reported to cause an IgE-mediated reaction. Table 15-8 lists the 8 foods that most commonly cause allergic reactions in the United States and that account for > 50% of allergies to food.9 Studies vary in their methodology for estimating the prevalence of allergy to individual foods, but cow’s milk and peanuts appear to be the most common, each affecting as many as 2% to 2.5% of children.7,8 In general, allergies to cow’s milk and to eggs are more prevalent in very young and preschool children, whereas allergies to peanuts, tree nuts, fish, and shellfish are more prevalent in older children.10 Labels on all packaged foods regulated by the US Food and Drug Administration must declare if the product contains even a trace of these 8 allergens.
How common is food allergy?
The Centers for Disease Control and Prevention (CDC) estimates that 4% to 6% of children in the United States have a food allergy.11,12 Almost 40% of food-allergic children have a history of severe food-induced reactions.13 Other developed countries cite similar estimates of overall prevalence.14,15
However, many estimates of the prevalence of food allergy are derived from self-reports, without objective data.9 Accurate evaluation of the prevalence of food allergy is challenging because of many factors, including differences in study methodology and the definition of allergy, geographic variation, racial and ethnic variations, and dietary exposure. Parents and children often confuse nonallergic food reactions, such as food intolerance, with food allergy. Precise determination of the prevalence and natural history of food allergy at the population level requires confirmatory oral food challenges of a representative sample of infants and young children with presumed food allergy.16
Continue to: The CDC concludes that the prevalence...
The CDC concludes that the prevalence of food allergy in children younger than 18 years increased by 18% from 1997 through 2007.17,18 The cause of this increase is unclear but likely multifactorial; hypotheses include an increase in associated atopic conditions, delayed introduction of allergenic foods, and living in an overly sterile environment with reduced exposure to microbes.19 A recent population-based study of food allergy among children in Olmsted County, Minnesota, found that the incidence of food allergy increased between 2002 and 2007, stabilized subsequently, and appears to be declining among children 1 to 4 years of age, following a peak in 2006-2007.19
What are the risk factors?
Proposed risk factors for food allergy include demographics, genetics, a history of atopic disease, and environmental factors. Food allergy might be more common in boys than in girls, and in African Americans and Asians than in Whites.12,16 A child is 7 times more likely to be allergic to peanuts if a parent or sibling has peanut allergy.20 Infants and children with eczema or asthma are more likely to develop food allergy; the severity of eczema correlates with risk.12,20 Improvements in hygiene in Western societies have decreased the spread of infection, but this has been accompanied by a rise in atopic disease. In countries where health standards are poor and exposure to pathogens is greater, the prevalence of allergy is low.21
Conversely, increased microbial exposure might help protect against atopy via a pathway in which T-helper cells prevent pro-allergic immune development and keep harmless environmental exposures from becoming allergens.22 Attendance at daycare and exposure to farm animals early in life reduces the likelihood of atopic disease.16,21 The presence of a dog in the home lessens the probability of egg allergy in infants.23 Food allergy is less common in younger siblings than in first-born children, possibly due to younger siblings’ increased exposure to infection and alterations in the gut microbiome.23,24
Diagnosis: Established by presentation, positive testing
Onset of symptoms after exposure to a suspected food allergen almost always occurs within 2 hours and, typically, resolves within several hours. Symptoms should occur consistently after ingestion of the food allergen. Subsequent exposures can trigger more severe symptoms, depending on the amount, route, and duration of exposure to the allergen.25 Reactions typically follow ingestion or cutaneous exposures; inhalation rarely triggers a response.26 IgE-mediated release of histamine and other mediators from mast cells and basophils triggers reactions that typically involve one or more organ systems (Table 2).25
Cutaneous symptoms are the most common manifestations of food allergy, occurring in 70% to 80% of childhood reactions. Gastrointestinal and oral or respiratory symptoms occur in, respectively, 40% to 50% and 25% of allergic reactions to food. Cardiovascular symptoms develop in fewer than 10% of allergic reactions.26
Continue to: Anaphylaxis
Anaphylaxis is a serious allergic reaction that develops rapidly and can cause death; diagnosis is based on specific criteria (Table 3).27 Data for rates of anaphylaxis due to food allergy are limited. The incidence of fatal reaction due to food allergy is estimated to be 1 in every 800,000 children annually.3
Clinical suspicion. Food allergy should be suspected in infants and children who present with anaphylaxis or other symptoms (Table 225) that occur within minutes to hours of ingesting food.4 Parental and self-reports alone are insufficient to diagnose food allergy. NIAID guidelines recommend that patient reports of food allergy be confirmed, because multiple studies demonstrate that 50% to 90% of presumed food allergies are not true allergy.4 Health care providers must obtain a detailed medical history and pertinent family history, plus perform a physical exam and allergy sensitivity testing. Methods to help diagnose food allergies include skin-prick tests, allergen-specific serum IgE tests, and oral food challenges.4
General principles and utility of testing
Before ordering tests, it’s important to distinguish between food sensitization and food allergy and to inform the families of children with suspected food allergy about the limitations of skin-prick tests and serum IgE tests. A child with IgE antibodies specific to a food or with a positive skin-prick test, but without symptoms upon ingestion of the food, is merely sensitized; food allergy indicates the appearance of symptoms following exposure to a specific food, in addition to the detection of specific IgE antibodies or a positive skin-prick test to that same food.28
Skin-prick testing. Skin-prick tests can be performed at any age. The procedure involves pricking or scratching the surface of the skin, usually the volar aspect of the forearm or the back, with a commercial extract. Testing should be performed by a physician or other provider who is properly trained in the technique and in interpreting results. The extract contains specific allergenic proteins that activate mast cells, resulting in a characteristic wheal-and-flare response that is typically measured 15 to 20 minutes after application. Some medications, such as H1- and H2-receptor blockers and tricyclic antidepressants, can interfere with results and need to be held for 3 to 5 days before testing.
A positive skin-prick test result is defined as a wheal ≥ 3 mm larger in diameter than the negative control. The larger the size of the wheal, the higher the likelihood of a reaction to the tested food.29 Patients who exhibit dermatographism might experience a wheal-and-flare response from the action of the skin-prick test, rather than from food-specific IgE antibodies. A negative skin-prick test has > 90% negative predictive value, so the test can rule out suspected food allergy.30 However, the skin-prick test alone cannot be used to diagnose food allergy because it has a high false-positive rate.
Continue to: Allergen-specific serum IgE testing
Allergen-specific serum IgE testing. Measurement of food-specific serum IgE levels is routinely available and requires only a blood specimen. The test can be used in patients with skin disease, and results are not affected by concurrent medications. The presence of food-specific IgE indicates that the patient is sensitized to that allergen and might react upon exposure; children with a higher level of antibody are more likely to react.29
Food-specific serum IgE tests are sensitive but nonspecific for food allergy.31 Broad food-allergy test panels often yield false-positive results that can lead to unnecessary dietary elimination, resulting in years of inconvenience, nutrition problems, and needless health care expense.32
It is appropriate to order tests of specific serum IgE to foods ingested within the 2 to 3–hour window before onset of symptoms to avoid broad food allergy test panels. Like skin-prick testing, positive allergen-specific serum IgE tests alone cannot diagnose food allergy.
Oral food challenge. The double-blind, placebo-controlled oral food challenge is the gold standard for the diagnosis of food allergy. Because this test is time-consuming and technically difficult, single-blind or open food challenges are more common. Oral food challenges should be performed only by a physician or other provider who can identify and treat anaphylaxis.
The oral challenge starts with a very low dose of suspected food allergen, which is gradually increased every 15 to 30 minutes as vital signs are monitored carefully. Patients are observed for an allergic reaction for 1 hour after the final dose.
Continue to: A retrospective study...
A retrospective study showed that, whereas 19% of patients reacted during an open food challenge, only 2% required epinephrine.33 Another study showed that 89% of children whose serum IgE testing was positive for specific foods were able to reintroduce those foods into the diet after a reassuring oral food challenge.34
Other diagnostic tests. The basophil activation assay, measurement of total serum IgE, atopy patch tests, and intradermal tests have been used, but are not recommended, for making the diagnosis of food allergy.4
How can food allergy be managed?
Medical options are few. No approved treatment exists for food allergy. However, it’s important to appropriately manage acute reactions and reduce the risk of subsequent reactions.1 Parents or other caregivers can give an H1 antihistamine, such as diphenhydramine, to infants and children with acute non-life-threatening symptoms. More severe symptoms require rapid administration of epinephrine.1 Auto-injectable epinephrine should be prescribed for parents and caregivers to use as needed for emergency treatment of anaphylaxis.
Team approach. A multidisciplinary approach to managing food allergy—involving physicians, school nurses, dietitians, and teachers, and using educational materials—is ideal. This strategy expands knowledge about food allergies, enhances correct administration of epinephrine, and reduces allergic reactions.1
Avoidance of food allergens can be challenging. Parents and caregivers should be taught to interpret the list of ingredients on food packages. Self-recognition of allergic reactions reduces the likelihood of a subsequent severe allergic reaction.35
Continue to: Importance of individualized care
Importance of individualized care. Health care providers should develop personalized management plans for their patients.1 (A good place to start is with the “Food Allergy & Anaphylaxis Emergency Care Plan”a developed by Food Allergy Research & Education [FARE]). Keep in mind that children with multiple food allergies consume less calcium and protein, and tend to be shorter4; therefore, it’s wise to closely monitor growth in these children and consider referral to a dietitian who is familiar with food allergy.
Potential of immunotherapy. Current research focuses on immunotherapy to induce tolerance to food allergens and protect against life-threatening allergic reactions. The goal of immunotherapy is to lessen adverse reactions to allergenic food proteins; the strategy is to have patients repeatedly ingest small but gradually increasing doses of the food allergen over many months.36 Although immunotherapy has successfully allowed some patients to consume larger quantities of a food without having an allergic reaction, it is unknown whether immunotherapy provides permanent resolution of food allergy. In addition, immunotherapy often causes serious systemic and local reactions.1,36,37
Is prevention possible?
Maternal diet during pregnancy and lactation does not affect development of food allergy in infants.38,39 Breastfeeding might prevent development of atopic disease, but evidence is insufficient to determine whether breastfeeding reduces the likelihood of food allergy.39 In nonbreastfed infants at high risk of food allergy, extensively or partially hydrolyzed formula might help protect against food allergy, compared to standard cow’s milk formula.9,39 Feeding with soy formula rather than cow’s milk formula does not help prevent food allergy.39,40 Pregnant and breastfeeding women should not restrict their diet as a means of preventing food allergy.39
Diet in infancy. Over the years, physicians have debated the proper timing of the introduction of solid foods into the diet of infants. Traditional teaching advocated delaying introduction of potentially allergenic foods to reduce the risk of food allergy; however, this guideline was based on inconsistent evidence,41 and the strategy did not reduce the incidence of food allergy. The prevalence of food allergy is lower in developing countries where caregivers introduce foods to infants at an earlier age.20
A recent large clinical trial indicates that early introduction of peanut-containing foods can help prevent peanut allergy. The study randomized 4- to 11-month-old infants with severe eczema, egg allergy, or both, to eat or avoid peanut products until 5 years of age. Infants assigned to eat peanuts were 81% less likely to develop peanut allergy than infants in the avoidance group. Absolute risk reduction was 14% (number need to treat = 7).42 Another study showed a nonsignificant (20%) lower relative risk of food allergy in breastfed infants who were fed potentially allergenic foods starting at 3 months of age, compared to being exclusively breastfed.43
Continue to: Based on these data...
Based on these data,42,43 NIAID instituted recommendations in 2017 aimed at preventing peanut allergy44:
- In healthy infants without known food allergy and those with mild or moderate eczema, caregivers can introduce peanut-containing foods at home with other solid foods.Parents who are anxious about a possible allergic reaction can introduce peanut products in a physician’s office.
- Infants at high risk of peanut allergy (those with severe eczema or egg allergy, or both) should undergo peanut-specific IgE or skin-prick testing:
- Negative test: indicates low risk of a reaction to peanuts; the infant should start consuming peanut-containing foods at 4 to 6 months of age, at home or in a physician’s office, depending on the parents’ preference
- Positive test: Referral to an allergist is recommended.
Do children outgrow food allergy?
Approximately 85% of children who have an allergy to milk, egg, soy, or wheat outgrow their allergy; however, only 15% to 20% who have an allergy to peanuts, tree nuts, fish, or shellfish eventually tolerate these foods. The time to resolution of food allergy varies with the food, and might not occur until adolescence.4 No test reliably predicts which children develop tolerance to any given food. A decrease in the food-specific serum IgE level or a decrease in the size of the wheal on skin-prick testing might portend the onset of tolerance to the food.4
CORRESPONDENCE
Catherine M. Bettcher, MD, FAAFP, Briarwood Family Medicine, 1801 Briarwood Circle, Building #10, Ann Arbor, MI 48108; cbettche@umich.edu.
Food allergy is a complex condition that has become a growing concern for parents and an increasing public health problem in the United States. Food allergy affects social interactions, school attendance, and quality of life, especially when associated with comorbid atopic conditions such as asthma, atopic dermatitis, and allergic rhinitis.1,2 It is the major cause of anaphylaxis in children, accounting for as many as 81% of cases.3 Societal costs of food allergy are great and are spread broadly across the health care system and the family. (See “What is the cost of food allergy?”2.)
SIDEBAR
What is the cost of food allergy?
Direct costs of food allergy to the health care system include medications, laboratory tests, office visits to primary care physicians and specialists, emergency department visits, and hospitalizations. Indirect costs include family medical and nonmedical expenses, lost work productivity, and job opportunity costs. Overall, the cost of food allergy in the United States is $24.8 billion annually—averaging $4184 for each affected child. Parents bear much of this expense.2
What a food allergy is—and isn’t
The National Institute of Allergy and Infectious Diseases (NIAID) defines food allergy as “an adverse health effect arising from a specific immune response that occurs reproducibly on exposure to a given food.”4 An adverse reaction to food or a food component that lacks an identified immunologic pathophysiology is not considered food allergy but is classified as food intolerance.4
Food allergy is caused by either immunoglobulin E (IgE)-mediated or non-IgE-mediated immunologic dysfunction. IgE antibodies can trigger an intense inflammatory response to certain allergens. Non-IgE-mediated food allergies are less common and not well understood.
This article focuses only on the diagnosis and management of IgE-mediated food allergy.
The culprits
More than 170 foods have been reported to cause an IgE-mediated reaction. Table 15-8 lists the 8 foods that most commonly cause allergic reactions in the United States and that account for > 50% of allergies to food.9 Studies vary in their methodology for estimating the prevalence of allergy to individual foods, but cow’s milk and peanuts appear to be the most common, each affecting as many as 2% to 2.5% of children.7,8 In general, allergies to cow’s milk and to eggs are more prevalent in very young and preschool children, whereas allergies to peanuts, tree nuts, fish, and shellfish are more prevalent in older children.10 Labels on all packaged foods regulated by the US Food and Drug Administration must declare if the product contains even a trace of these 8 allergens.
How common is food allergy?
The Centers for Disease Control and Prevention (CDC) estimates that 4% to 6% of children in the United States have a food allergy.11,12 Almost 40% of food-allergic children have a history of severe food-induced reactions.13 Other developed countries cite similar estimates of overall prevalence.14,15
However, many estimates of the prevalence of food allergy are derived from self-reports, without objective data.9 Accurate evaluation of the prevalence of food allergy is challenging because of many factors, including differences in study methodology and the definition of allergy, geographic variation, racial and ethnic variations, and dietary exposure. Parents and children often confuse nonallergic food reactions, such as food intolerance, with food allergy. Precise determination of the prevalence and natural history of food allergy at the population level requires confirmatory oral food challenges of a representative sample of infants and young children with presumed food allergy.16
Continue to: The CDC concludes that the prevalence...
The CDC concludes that the prevalence of food allergy in children younger than 18 years increased by 18% from 1997 through 2007.17,18 The cause of this increase is unclear but likely multifactorial; hypotheses include an increase in associated atopic conditions, delayed introduction of allergenic foods, and living in an overly sterile environment with reduced exposure to microbes.19 A recent population-based study of food allergy among children in Olmsted County, Minnesota, found that the incidence of food allergy increased between 2002 and 2007, stabilized subsequently, and appears to be declining among children 1 to 4 years of age, following a peak in 2006-2007.19
What are the risk factors?
Proposed risk factors for food allergy include demographics, genetics, a history of atopic disease, and environmental factors. Food allergy might be more common in boys than in girls, and in African Americans and Asians than in Whites.12,16 A child is 7 times more likely to be allergic to peanuts if a parent or sibling has peanut allergy.20 Infants and children with eczema or asthma are more likely to develop food allergy; the severity of eczema correlates with risk.12,20 Improvements in hygiene in Western societies have decreased the spread of infection, but this has been accompanied by a rise in atopic disease. In countries where health standards are poor and exposure to pathogens is greater, the prevalence of allergy is low.21
Conversely, increased microbial exposure might help protect against atopy via a pathway in which T-helper cells prevent pro-allergic immune development and keep harmless environmental exposures from becoming allergens.22 Attendance at daycare and exposure to farm animals early in life reduces the likelihood of atopic disease.16,21 The presence of a dog in the home lessens the probability of egg allergy in infants.23 Food allergy is less common in younger siblings than in first-born children, possibly due to younger siblings’ increased exposure to infection and alterations in the gut microbiome.23,24
Diagnosis: Established by presentation, positive testing
Onset of symptoms after exposure to a suspected food allergen almost always occurs within 2 hours and, typically, resolves within several hours. Symptoms should occur consistently after ingestion of the food allergen. Subsequent exposures can trigger more severe symptoms, depending on the amount, route, and duration of exposure to the allergen.25 Reactions typically follow ingestion or cutaneous exposures; inhalation rarely triggers a response.26 IgE-mediated release of histamine and other mediators from mast cells and basophils triggers reactions that typically involve one or more organ systems (Table 2).25
Cutaneous symptoms are the most common manifestations of food allergy, occurring in 70% to 80% of childhood reactions. Gastrointestinal and oral or respiratory symptoms occur in, respectively, 40% to 50% and 25% of allergic reactions to food. Cardiovascular symptoms develop in fewer than 10% of allergic reactions.26
Continue to: Anaphylaxis
Anaphylaxis is a serious allergic reaction that develops rapidly and can cause death; diagnosis is based on specific criteria (Table 3).27 Data for rates of anaphylaxis due to food allergy are limited. The incidence of fatal reaction due to food allergy is estimated to be 1 in every 800,000 children annually.3
Clinical suspicion. Food allergy should be suspected in infants and children who present with anaphylaxis or other symptoms (Table 225) that occur within minutes to hours of ingesting food.4 Parental and self-reports alone are insufficient to diagnose food allergy. NIAID guidelines recommend that patient reports of food allergy be confirmed, because multiple studies demonstrate that 50% to 90% of presumed food allergies are not true allergy.4 Health care providers must obtain a detailed medical history and pertinent family history, plus perform a physical exam and allergy sensitivity testing. Methods to help diagnose food allergies include skin-prick tests, allergen-specific serum IgE tests, and oral food challenges.4
General principles and utility of testing
Before ordering tests, it’s important to distinguish between food sensitization and food allergy and to inform the families of children with suspected food allergy about the limitations of skin-prick tests and serum IgE tests. A child with IgE antibodies specific to a food or with a positive skin-prick test, but without symptoms upon ingestion of the food, is merely sensitized; food allergy indicates the appearance of symptoms following exposure to a specific food, in addition to the detection of specific IgE antibodies or a positive skin-prick test to that same food.28
Skin-prick testing. Skin-prick tests can be performed at any age. The procedure involves pricking or scratching the surface of the skin, usually the volar aspect of the forearm or the back, with a commercial extract. Testing should be performed by a physician or other provider who is properly trained in the technique and in interpreting results. The extract contains specific allergenic proteins that activate mast cells, resulting in a characteristic wheal-and-flare response that is typically measured 15 to 20 minutes after application. Some medications, such as H1- and H2-receptor blockers and tricyclic antidepressants, can interfere with results and need to be held for 3 to 5 days before testing.
A positive skin-prick test result is defined as a wheal ≥ 3 mm larger in diameter than the negative control. The larger the size of the wheal, the higher the likelihood of a reaction to the tested food.29 Patients who exhibit dermatographism might experience a wheal-and-flare response from the action of the skin-prick test, rather than from food-specific IgE antibodies. A negative skin-prick test has > 90% negative predictive value, so the test can rule out suspected food allergy.30 However, the skin-prick test alone cannot be used to diagnose food allergy because it has a high false-positive rate.
Continue to: Allergen-specific serum IgE testing
Allergen-specific serum IgE testing. Measurement of food-specific serum IgE levels is routinely available and requires only a blood specimen. The test can be used in patients with skin disease, and results are not affected by concurrent medications. The presence of food-specific IgE indicates that the patient is sensitized to that allergen and might react upon exposure; children with a higher level of antibody are more likely to react.29
Food-specific serum IgE tests are sensitive but nonspecific for food allergy.31 Broad food-allergy test panels often yield false-positive results that can lead to unnecessary dietary elimination, resulting in years of inconvenience, nutrition problems, and needless health care expense.32
It is appropriate to order tests of specific serum IgE to foods ingested within the 2 to 3–hour window before onset of symptoms to avoid broad food allergy test panels. Like skin-prick testing, positive allergen-specific serum IgE tests alone cannot diagnose food allergy.
Oral food challenge. The double-blind, placebo-controlled oral food challenge is the gold standard for the diagnosis of food allergy. Because this test is time-consuming and technically difficult, single-blind or open food challenges are more common. Oral food challenges should be performed only by a physician or other provider who can identify and treat anaphylaxis.
The oral challenge starts with a very low dose of suspected food allergen, which is gradually increased every 15 to 30 minutes as vital signs are monitored carefully. Patients are observed for an allergic reaction for 1 hour after the final dose.
Continue to: A retrospective study...
A retrospective study showed that, whereas 19% of patients reacted during an open food challenge, only 2% required epinephrine.33 Another study showed that 89% of children whose serum IgE testing was positive for specific foods were able to reintroduce those foods into the diet after a reassuring oral food challenge.34
Other diagnostic tests. The basophil activation assay, measurement of total serum IgE, atopy patch tests, and intradermal tests have been used, but are not recommended, for making the diagnosis of food allergy.4
How can food allergy be managed?
Medical options are few. No approved treatment exists for food allergy. However, it’s important to appropriately manage acute reactions and reduce the risk of subsequent reactions.1 Parents or other caregivers can give an H1 antihistamine, such as diphenhydramine, to infants and children with acute non-life-threatening symptoms. More severe symptoms require rapid administration of epinephrine.1 Auto-injectable epinephrine should be prescribed for parents and caregivers to use as needed for emergency treatment of anaphylaxis.
Team approach. A multidisciplinary approach to managing food allergy—involving physicians, school nurses, dietitians, and teachers, and using educational materials—is ideal. This strategy expands knowledge about food allergies, enhances correct administration of epinephrine, and reduces allergic reactions.1
Avoidance of food allergens can be challenging. Parents and caregivers should be taught to interpret the list of ingredients on food packages. Self-recognition of allergic reactions reduces the likelihood of a subsequent severe allergic reaction.35
Continue to: Importance of individualized care
Importance of individualized care. Health care providers should develop personalized management plans for their patients.1 (A good place to start is with the “Food Allergy & Anaphylaxis Emergency Care Plan”a developed by Food Allergy Research & Education [FARE]). Keep in mind that children with multiple food allergies consume less calcium and protein, and tend to be shorter4; therefore, it’s wise to closely monitor growth in these children and consider referral to a dietitian who is familiar with food allergy.
Potential of immunotherapy. Current research focuses on immunotherapy to induce tolerance to food allergens and protect against life-threatening allergic reactions. The goal of immunotherapy is to lessen adverse reactions to allergenic food proteins; the strategy is to have patients repeatedly ingest small but gradually increasing doses of the food allergen over many months.36 Although immunotherapy has successfully allowed some patients to consume larger quantities of a food without having an allergic reaction, it is unknown whether immunotherapy provides permanent resolution of food allergy. In addition, immunotherapy often causes serious systemic and local reactions.1,36,37
Is prevention possible?
Maternal diet during pregnancy and lactation does not affect development of food allergy in infants.38,39 Breastfeeding might prevent development of atopic disease, but evidence is insufficient to determine whether breastfeeding reduces the likelihood of food allergy.39 In nonbreastfed infants at high risk of food allergy, extensively or partially hydrolyzed formula might help protect against food allergy, compared to standard cow’s milk formula.9,39 Feeding with soy formula rather than cow’s milk formula does not help prevent food allergy.39,40 Pregnant and breastfeeding women should not restrict their diet as a means of preventing food allergy.39
Diet in infancy. Over the years, physicians have debated the proper timing of the introduction of solid foods into the diet of infants. Traditional teaching advocated delaying introduction of potentially allergenic foods to reduce the risk of food allergy; however, this guideline was based on inconsistent evidence,41 and the strategy did not reduce the incidence of food allergy. The prevalence of food allergy is lower in developing countries where caregivers introduce foods to infants at an earlier age.20
A recent large clinical trial indicates that early introduction of peanut-containing foods can help prevent peanut allergy. The study randomized 4- to 11-month-old infants with severe eczema, egg allergy, or both, to eat or avoid peanut products until 5 years of age. Infants assigned to eat peanuts were 81% less likely to develop peanut allergy than infants in the avoidance group. Absolute risk reduction was 14% (number need to treat = 7).42 Another study showed a nonsignificant (20%) lower relative risk of food allergy in breastfed infants who were fed potentially allergenic foods starting at 3 months of age, compared to being exclusively breastfed.43
Continue to: Based on these data...
Based on these data,42,43 NIAID instituted recommendations in 2017 aimed at preventing peanut allergy44:
- In healthy infants without known food allergy and those with mild or moderate eczema, caregivers can introduce peanut-containing foods at home with other solid foods.Parents who are anxious about a possible allergic reaction can introduce peanut products in a physician’s office.
- Infants at high risk of peanut allergy (those with severe eczema or egg allergy, or both) should undergo peanut-specific IgE or skin-prick testing:
- Negative test: indicates low risk of a reaction to peanuts; the infant should start consuming peanut-containing foods at 4 to 6 months of age, at home or in a physician’s office, depending on the parents’ preference
- Positive test: Referral to an allergist is recommended.
Do children outgrow food allergy?
Approximately 85% of children who have an allergy to milk, egg, soy, or wheat outgrow their allergy; however, only 15% to 20% who have an allergy to peanuts, tree nuts, fish, or shellfish eventually tolerate these foods. The time to resolution of food allergy varies with the food, and might not occur until adolescence.4 No test reliably predicts which children develop tolerance to any given food. A decrease in the food-specific serum IgE level or a decrease in the size of the wheal on skin-prick testing might portend the onset of tolerance to the food.4
CORRESPONDENCE
Catherine M. Bettcher, MD, FAAFP, Briarwood Family Medicine, 1801 Briarwood Circle, Building #10, Ann Arbor, MI 48108; cbettche@umich.edu.
1. Muraro A, Werfel T, Hoffmann-Sommergruber K, et al; . EAACI food allergy and anaphylaxis guidelines: diagnosis and management of food allergy. Allergy. 2014;69:1008-1025.
2. Gupta R, Holdford D, Bilaver L, et al. The economic impact of childhood food allergy in the United States. JAMA Pediatr. 2013;167:1026-1031.
3. Cianferoni A, Muraro A. Food-induced anaphylaxis. Immunol Allergy Clin North Am. 2012;32:165-195.
4., Boyce JA, Assa’ad A, Burks WA, et al. Guidelines for the diagnosis and management of food allergy in the United States: report of the NIAID-sponsored expert panel. J Allergy Clin Immunol. 2010;126(6 suppl):S1-S58.
5. Vierk KA, Koehler KM, Fein SB, et al. Prevalence of self-reported food allergy in American adults and use of food labels. J Allergy Clin Immunol. 2007;119:1504-1510.
6. Allen KJ, Koplin JJ. The epidemiology of IgE-mediated food allergy and anaphylaxis. Immunol Allergy Clin North Am. 2012;32:35-50.
7. Iweala OI, Choudhary SK, Commins SP. Food allergy. Curr Gastroenterol Rep. 2018;20:17.
8. Gupta RS, Warren CM, Smith BM, et al. The public health impact of parent-reported childhood food allergies in the United States. Pediatrics. 2018;142:e20181235.
9. Chafen JJS, Newberry SJ, Riedl MA, et al. Diagnosing and managing common food allergies: a systematic review. JAMA. 2010;303:1848-1856.
10. Nwaru BI, Hickstein L, Panesar SS, et al. Prevalence of common food allergies in Europe: a systematic review and meta-analysis. Allergy. 2014;69:992-1007.
11. Branum AM, Lukacs SL. Food allergy among U.S. children: trends in prevalence and hospitalizations. NCHS Data Brief No. 10. National Center for Health Statistics. October 2008. www.cdc.gov/nchs/products/databriefs/db10.htm. Accessed August 19, 2020.
12. Liu AH, Jaramillo R, Sicherer SH, et al. National prevalence and risk factors for food allergy and relationship to asthma: results from the National Health and Nutrition Examination Survey 2005-2006. J Allergy Clin Immunol. 2010;126:798-806.e13.
13. Gupta RS, Springston EE, Warrier MR, et al. The prevalence, severity, and distribution of childhood food allergy in the United States. Pediatrics. 2011;128:e9-e17.
14. Soller L, Ben-Shoshan M, Harrington DW, et al. Overall prevalence of self-reported food allergy in Canada. J Allergy Clin Immunol. 2012;130:986-988.
15. Venter C, Pereira B, Voigt K, et al. Prevalence and cumulative incidence of food hypersensitivity in the first 3 years of life. Allergy. 2008;63:354-359.
16. Savage J, Johns CB. Food allergy: epidemiology and natural history. Immunol Allergy Clin North Am. 2015;35:45-59.
17. Branum AM, Lukacs SL. Food allergy among children in the United States. Pediatrics. 2009;124:1549-1555.
18. Jackson KD, Howie LD, Akinbami LJ. Trends in allergic conditions among children: United States, 1997-2011. NCHS Data Brief No. 121. National Center for Health Statistics. May 2013. www.cdc.gov/nchs/products/databriefs/db121.htm. Accessed August 19, 2020.
19. Willits EK, Park MA, Hartz MF, et al. Food allergy: a comprehensive population-based cohort study. Mayo Clin Proc. 2018;93:1423-1430.
20. Lack G. Epidemiologic risks for food allergy. J Allergy Clin Immunol. 2008;121:1331-1336.
21. Okada H, Kuhn C, Feillet H, et al. The ‘hygiene hypothesis’ for autoimmune and allergic diseases: an update. Clin Exp Immunol. 2010;160:1-9.
22. Liu AH. Hygiene theory and allergy and asthma prevention. Paediatr Perinat Epidemiol. 2007;21 Suppl 3:2-7.
23. Prince BT, Mandel MJ, Nadeau K, et al. Gut microbiome and the development of food allergy and allergic disease. Pediatr Clin North Am. 2015;62:1479-1492.
24. Kusunoki T, Mukaida K, Morimoto T, et al. Birth order effect on childhood food allergy. Pediatr Allergy Immunol. 2012;23:250-254.
25. Abrams EM, Sicherer SH. Diagnosis and management of food allergy. CMAJ. 2016;188:1087-1093.
26. Perry TT, Matsui EC, Conover-Walker MK, et al. Risk of oral food challenges. J Allergy Clin Immunol. 2004;114:1164-1168.
27. Sampson HA, A, Campbell RL, et al. Second symposium on the definition and management of anaphylaxis: summary report—Second National Institute of Allergy and Infectious Disease/Food Allergy and Anaphylaxis Network symposium. J Allergy Clin Immunol. 2006;117:391-397.
28. Sampson HA. Food allergy. Part 2: diagnosis and management. J Allergy Clin Immunol. 1999;103:981-989.
29. Lieberman JA, Sicherer SH. Diagnosis of food allergy: epicutaneous skin tests, in vitro tests, and oral food challenge. Curr Allergy Asthma Rep. 2011;11:58-64.
30. Sicherer SH, Sampson HA. Food allergy. J Allergy Clin Immunol. 2010;125(2 suppl 2):S116-S125.
31. Soares-Weiser K, Takwoingi Y, Panesar SS, et al. The diagnosis of food allergy: a systematic review and meta-analysis. Allergy. 2014;69:76-86.
32. Bird JA, Crain M, Varshney P. Food allergen panel testing often results in misdiagnosis of food allergy. J Pediatr. 2015;166:97-100.
33. Lieberman JA, Cox AL, Vitale M, et al. Outcomes of office-based, open food challenges in the management of food allergy. J Allergy Clin Immunol. 2011;128:1120-1122.
34. Fleischer DM, Bock SA, Spears GC, et al. Oral food challenges in children with a diagnosis of food allergy. J Pediatr. 2011;158:578-583.e1.
35. Ewan PW, Clark AT. Long-term prospective observational study of patients with peanut and nut allergy after participation in a management plan. Lancet. 2001;357:111-115.
36. Nurmatov U, Dhami S, Arasi S, et al. Allergen immunotherapy for IgE-mediated food allergy: a systematic review and meta-analysis. Allergy. 2017;72:1133-1147.
37. Sampson HA, Aceves S, Bock SA, et al. Food allergy: a practice parameter update—2014. J Allergy Clin Immunol. 2014;134:1016-1025.e43.
38. Kramer MS, Kakuma R. Maternal dietary antigen avoidance during pregnancy or lactation, or both, for preventing or treating atopic disease in the child. Cochrane Database Syst Rev. 2012;2012(9):CD000133.
39. de Silva D, Geromi M, Halken S, et al; . Primary prevention of food allergy in children and adults: systematic review. Allergy. 2014;69:581-589.
40. Osborn DA, Sinn J. Soy formula for prevention of allergy and food intolerance in infants. Cochrane Database Syst Rev. 2004;(3):CD003741.
41. Filipiak B, Zutavern A, Koletzko S, et al; GINI-Group. Solid food introduction in relation to eczema: results from a four-year prospective birth cohort study. J Pediatr. 2007;151:352-358.
42. Du Toit G, Roberts G, Sayre PH, et al; LEAP Study Team. Randomized trial of peanut consumption in infants at risk for peanut allergy. N Engl J Med. 2015;372:803-813.
43. Perkin MR, Logan K, Tseng A, et al; EAT Study Team. Randomized trial of introduction of allergenic foods in breast-fed infants. N Engl J Med. 2016;374:1733-1743.
44. Togias A, Cooper SF, Acebal ML, et al. Addendum guidelines for the prevention of peanut allergy in the United States: report of the National Institute of Allergy and Infectious Diseases-sponsored expert panel. J Allergy Clin Immunol. 2017;139:29-44.
1. Muraro A, Werfel T, Hoffmann-Sommergruber K, et al; . EAACI food allergy and anaphylaxis guidelines: diagnosis and management of food allergy. Allergy. 2014;69:1008-1025.
2. Gupta R, Holdford D, Bilaver L, et al. The economic impact of childhood food allergy in the United States. JAMA Pediatr. 2013;167:1026-1031.
3. Cianferoni A, Muraro A. Food-induced anaphylaxis. Immunol Allergy Clin North Am. 2012;32:165-195.
4., Boyce JA, Assa’ad A, Burks WA, et al. Guidelines for the diagnosis and management of food allergy in the United States: report of the NIAID-sponsored expert panel. J Allergy Clin Immunol. 2010;126(6 suppl):S1-S58.
5. Vierk KA, Koehler KM, Fein SB, et al. Prevalence of self-reported food allergy in American adults and use of food labels. J Allergy Clin Immunol. 2007;119:1504-1510.
6. Allen KJ, Koplin JJ. The epidemiology of IgE-mediated food allergy and anaphylaxis. Immunol Allergy Clin North Am. 2012;32:35-50.
7. Iweala OI, Choudhary SK, Commins SP. Food allergy. Curr Gastroenterol Rep. 2018;20:17.
8. Gupta RS, Warren CM, Smith BM, et al. The public health impact of parent-reported childhood food allergies in the United States. Pediatrics. 2018;142:e20181235.
9. Chafen JJS, Newberry SJ, Riedl MA, et al. Diagnosing and managing common food allergies: a systematic review. JAMA. 2010;303:1848-1856.
10. Nwaru BI, Hickstein L, Panesar SS, et al. Prevalence of common food allergies in Europe: a systematic review and meta-analysis. Allergy. 2014;69:992-1007.
11. Branum AM, Lukacs SL. Food allergy among U.S. children: trends in prevalence and hospitalizations. NCHS Data Brief No. 10. National Center for Health Statistics. October 2008. www.cdc.gov/nchs/products/databriefs/db10.htm. Accessed August 19, 2020.
12. Liu AH, Jaramillo R, Sicherer SH, et al. National prevalence and risk factors for food allergy and relationship to asthma: results from the National Health and Nutrition Examination Survey 2005-2006. J Allergy Clin Immunol. 2010;126:798-806.e13.
13. Gupta RS, Springston EE, Warrier MR, et al. The prevalence, severity, and distribution of childhood food allergy in the United States. Pediatrics. 2011;128:e9-e17.
14. Soller L, Ben-Shoshan M, Harrington DW, et al. Overall prevalence of self-reported food allergy in Canada. J Allergy Clin Immunol. 2012;130:986-988.
15. Venter C, Pereira B, Voigt K, et al. Prevalence and cumulative incidence of food hypersensitivity in the first 3 years of life. Allergy. 2008;63:354-359.
16. Savage J, Johns CB. Food allergy: epidemiology and natural history. Immunol Allergy Clin North Am. 2015;35:45-59.
17. Branum AM, Lukacs SL. Food allergy among children in the United States. Pediatrics. 2009;124:1549-1555.
18. Jackson KD, Howie LD, Akinbami LJ. Trends in allergic conditions among children: United States, 1997-2011. NCHS Data Brief No. 121. National Center for Health Statistics. May 2013. www.cdc.gov/nchs/products/databriefs/db121.htm. Accessed August 19, 2020.
19. Willits EK, Park MA, Hartz MF, et al. Food allergy: a comprehensive population-based cohort study. Mayo Clin Proc. 2018;93:1423-1430.
20. Lack G. Epidemiologic risks for food allergy. J Allergy Clin Immunol. 2008;121:1331-1336.
21. Okada H, Kuhn C, Feillet H, et al. The ‘hygiene hypothesis’ for autoimmune and allergic diseases: an update. Clin Exp Immunol. 2010;160:1-9.
22. Liu AH. Hygiene theory and allergy and asthma prevention. Paediatr Perinat Epidemiol. 2007;21 Suppl 3:2-7.
23. Prince BT, Mandel MJ, Nadeau K, et al. Gut microbiome and the development of food allergy and allergic disease. Pediatr Clin North Am. 2015;62:1479-1492.
24. Kusunoki T, Mukaida K, Morimoto T, et al. Birth order effect on childhood food allergy. Pediatr Allergy Immunol. 2012;23:250-254.
25. Abrams EM, Sicherer SH. Diagnosis and management of food allergy. CMAJ. 2016;188:1087-1093.
26. Perry TT, Matsui EC, Conover-Walker MK, et al. Risk of oral food challenges. J Allergy Clin Immunol. 2004;114:1164-1168.
27. Sampson HA, A, Campbell RL, et al. Second symposium on the definition and management of anaphylaxis: summary report—Second National Institute of Allergy and Infectious Disease/Food Allergy and Anaphylaxis Network symposium. J Allergy Clin Immunol. 2006;117:391-397.
28. Sampson HA. Food allergy. Part 2: diagnosis and management. J Allergy Clin Immunol. 1999;103:981-989.
29. Lieberman JA, Sicherer SH. Diagnosis of food allergy: epicutaneous skin tests, in vitro tests, and oral food challenge. Curr Allergy Asthma Rep. 2011;11:58-64.
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PRACTICE RECOMMENDATIONS
› Diagnose food allergy based on a convincing clinical history paired with positive diagnostic testing. A
› Use a multidisciplinary approach to improve caregiver and patient understanding of food allergy and to reduce allergic reactions. B
› Recommend early introduction of peanut products to infants to reduce the likelihood of peanut allergy. A
Strength of recommendation (SOR)
A Good-quality patient-oriented evidence
B Inconsistent or limited-quality patient-oriented evidence
C Consensus, usual practice, opinion, disease-oriented evidence, case series
Papules on a child’s chest
Potassium hydroxide preparation of expressed contents revealed no molluscum bodies, but rather, small-caliber, trapped, and coiled hairs consistent with eruptive vellus hair cysts (EVHCs).
Vellus hairs are fine, light-colored (nonterminal) hairs that normally are found on the face, trunk, and limbs. EVHCs are typically asymptomatic papules containing an entrapped vellus hair. They form from entrapment of the hair follicle just proximal to the infundibulum, leading to hair bulb atrophy and dilation of the follicle. EVHCs typically are dome-shaped, flesh-colored soft papules that are 2 to 3 mm in size.
Diagnostic confusion can arise with molluscum contagiosum because those lesions also tend to be umbilicated and flesh colored. EVHCs can appear at any age but are more common in the first 3 decades of life. Familial types exist, presenting earlier in life than sporadic types. The differential diagnosis includes molluscum contagiosum, folliculitis, and steatocystoma multiplex. Rare genodermatoses have been associated with EVHCs, including autosomal dominant familial keratin gene mutation, anhidrotic and hidrotic ectodermal dysplasia, and pachyonychia congenita.
Up to 25% of cases spontaneously resolve, so patients can be counseled to observe the lesions. Alternative options including topical emollients or various topical keratolytics, including ammonium lactate 20% once to twice daily, topical urea, or topical salicylic acid until the lesions are flat and smooth. Topical and systemic retinoids have been reported to have limited success. Individual lesions of concern may be removed surgically by excision, curettage, cryotherapy, or laser but will likely leave a minor scar.
The patient and his family were reassured of the benign nature of the lesions and instructed to treat the papules with topical ammonium lactate 20% twice daily until the next appointment in 12 weeks. At follow-up, many, but not all, of the lesions had resolved.
Text courtesy of Tristan Reynolds, DO, Maine Dartmouth Family Medicine Residency, and Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).
Torchia D, Vega J, Schachner LA. Eruptive vellus hair cysts: a systematic review. Am J Clin Dermatol. 2012;13:19-28.
Potassium hydroxide preparation of expressed contents revealed no molluscum bodies, but rather, small-caliber, trapped, and coiled hairs consistent with eruptive vellus hair cysts (EVHCs).
Vellus hairs are fine, light-colored (nonterminal) hairs that normally are found on the face, trunk, and limbs. EVHCs are typically asymptomatic papules containing an entrapped vellus hair. They form from entrapment of the hair follicle just proximal to the infundibulum, leading to hair bulb atrophy and dilation of the follicle. EVHCs typically are dome-shaped, flesh-colored soft papules that are 2 to 3 mm in size.
Diagnostic confusion can arise with molluscum contagiosum because those lesions also tend to be umbilicated and flesh colored. EVHCs can appear at any age but are more common in the first 3 decades of life. Familial types exist, presenting earlier in life than sporadic types. The differential diagnosis includes molluscum contagiosum, folliculitis, and steatocystoma multiplex. Rare genodermatoses have been associated with EVHCs, including autosomal dominant familial keratin gene mutation, anhidrotic and hidrotic ectodermal dysplasia, and pachyonychia congenita.
Up to 25% of cases spontaneously resolve, so patients can be counseled to observe the lesions. Alternative options including topical emollients or various topical keratolytics, including ammonium lactate 20% once to twice daily, topical urea, or topical salicylic acid until the lesions are flat and smooth. Topical and systemic retinoids have been reported to have limited success. Individual lesions of concern may be removed surgically by excision, curettage, cryotherapy, or laser but will likely leave a minor scar.
The patient and his family were reassured of the benign nature of the lesions and instructed to treat the papules with topical ammonium lactate 20% twice daily until the next appointment in 12 weeks. At follow-up, many, but not all, of the lesions had resolved.
Text courtesy of Tristan Reynolds, DO, Maine Dartmouth Family Medicine Residency, and Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).
Potassium hydroxide preparation of expressed contents revealed no molluscum bodies, but rather, small-caliber, trapped, and coiled hairs consistent with eruptive vellus hair cysts (EVHCs).
Vellus hairs are fine, light-colored (nonterminal) hairs that normally are found on the face, trunk, and limbs. EVHCs are typically asymptomatic papules containing an entrapped vellus hair. They form from entrapment of the hair follicle just proximal to the infundibulum, leading to hair bulb atrophy and dilation of the follicle. EVHCs typically are dome-shaped, flesh-colored soft papules that are 2 to 3 mm in size.
Diagnostic confusion can arise with molluscum contagiosum because those lesions also tend to be umbilicated and flesh colored. EVHCs can appear at any age but are more common in the first 3 decades of life. Familial types exist, presenting earlier in life than sporadic types. The differential diagnosis includes molluscum contagiosum, folliculitis, and steatocystoma multiplex. Rare genodermatoses have been associated with EVHCs, including autosomal dominant familial keratin gene mutation, anhidrotic and hidrotic ectodermal dysplasia, and pachyonychia congenita.
Up to 25% of cases spontaneously resolve, so patients can be counseled to observe the lesions. Alternative options including topical emollients or various topical keratolytics, including ammonium lactate 20% once to twice daily, topical urea, or topical salicylic acid until the lesions are flat and smooth. Topical and systemic retinoids have been reported to have limited success. Individual lesions of concern may be removed surgically by excision, curettage, cryotherapy, or laser but will likely leave a minor scar.
The patient and his family were reassured of the benign nature of the lesions and instructed to treat the papules with topical ammonium lactate 20% twice daily until the next appointment in 12 weeks. At follow-up, many, but not all, of the lesions had resolved.
Text courtesy of Tristan Reynolds, DO, Maine Dartmouth Family Medicine Residency, and Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).
Torchia D, Vega J, Schachner LA. Eruptive vellus hair cysts: a systematic review. Am J Clin Dermatol. 2012;13:19-28.
Torchia D, Vega J, Schachner LA. Eruptive vellus hair cysts: a systematic review. Am J Clin Dermatol. 2012;13:19-28.