Pigmentation Disorders

Photo Challenge

Chronic Hyperpigmented Patches on the Legs

A 37-year-old man with a history of cerebral palsy, bipolar disorder, and impulse control disorder presented to the emergency department with...


Aesthetic Dermatology Update

Acid series: Lactic acid

One of the most commonly used organic acids used on the skin, lactic acid, has been used for over 3 decades.

Photo Challenge

Hyperpigmentation on the Head and Neck

A 78-year-old Asian woman presented to the dermatology clinic with progressively worsening dark spots on the forehead and neck of 3 months’...