Nevus Comedonicus (Blaschkoid Variant)

A 14-year-old boy presented with asymptomatic pits with black dots over the chest and left arm, diagnosed as nevus comedonicus, a type of epidermal nevus originating from hair follicles. This condition, which appeared shortly after birth, is characterized by dilated follicular openings filled with keratin in a Blaschkoid pattern. The patient showed no systemic abnormalities, ruling out nevus comedonicus syndrome. Treatment involved topical tretinoin 0.1% cream. Differential diagnoses include acne-related conditions, and treatment typically involves keratolytics like retinoids. The study emphasizes the importance of distinguishing nevus comedonicus from other similar dermatological conditions.