Dermatologic Disorders

A 61-year-old man was hospitalized for worsening cutaneous ulcerations on his head, extremities, and trunk.

A 54-year-old man presented to a rheumatology clinic for ongoing care. The patient initially presented to the rheumatology clinic 9 years earlier with a 7-year history of diffuse painful skin. Upon his...

Maculopapular cutaneous mastocytosis (also known as urticaria pigmentosa) is the most common form of cutaneous mastocytosis and accounts for 70% to 90% of pediatric cases. Its incidence has been estimated...

This article is part of a series describing and differentiating dermatologic lumps and bumps. In Part 43, Leung and colleagues describe blue nevi. To access previously published articles in the series,...

A 66-year-old man presents to the clinic with a small, bright red bump on his left ring finger, which he noticed about 1 to 2 months prior to presentation.

A 60-year-old woman presented for Mohs micrographic surgery to remove a suspected squamous cell carcinoma on the right nasal sidewall.

An 11-month-old boy was brought into the clinic by his mother for evaluation of multiple widespread tan-brown macules and papules located on the infant’s back and chest.

Mastocytosis is a rare heterogenous group of disorders characterized by a clonal proliferation and accumulation of mast cells in one or more organs, mostly skin and bone marrow and, less frequently,...

Pruritus is a common patient concern with a broad differential that is frequently encountered by clinicians. Brachioradial pruritus is an uncommon neuropathic pruritus that negatively impacts quality of...

A 44-year-old woman with a past medical history of left congenital cataract and migraines presented to a dermatology clinic with an intermittently draining lesion on the left upper chest that had been...