Dermatologic Disorders

A 59-year-old woman with Fitzpatrick skin type V presented to the dermatology clinic with symmetrically distributed brown plaques on the extensor surfaces of her knees, elbows, proximal interphalangeal...

A 3 year-year-old previously healthy boy presents with a rash that abruptly appeared on his bilateral cheeks, upper arms, buttocks and extending slightly to his lower back and bilateral legs.

A 15-month-old girl with a 1-week history of a non-pruritic rash on the left arm and trunk was brought to the dermatologist by her mother.

This article is part of a series describing and differentiating dermatologic lumps and bumps. In Part 37, Leung and colleagues describe keratosis pilaris. To access previously published articles in the...

Steatocystoma multiplex is a rare skin condition clinically characterized by multiple, asymptomatic, smooth, round, soft to firm, often freely movable, yellow or skin-colored papules and nodules.

A 3-month-old boy presented to the dermatology clinic with large erythematous plaques that appeared in the first few weeks of life, localized to the face, back, and torso.

A 53-year-old woman presented for a dermatology consult for a spreading ulcer on the lateral left calf. The patient thought the lesion was an insect bite and had applied an antibiotic ointment and a...

This article is part of a series describing and differentiating dermatologic lumps and bumps. In Part 38, Leung and colleagues describe lichen striatus. To access previously published articles in the...

Diffuse cutaneous mastocytosis, a rare but potentially fatal form of cutaneous mastocytosis, accounts for approximately 1% to 5% of pediatric cutaneous mastocytosis cases

This article is part of a series describing and differentiating dermatologic lumps and bumps. In Part 41, Leung and colleagues describe congenital melanocytic nevi. To access previously published articles...