What is Rosacea?

What is Rosacea?

…en almost exclusively in males. It is characterized by highly glabrous skin, sebaceous hyperplasia, and firm induration of the skin (resulting from fibrosis) that can be cosmetically disfiguring in appearance. The nose is the most common site of phym…

Differential Diagnosis in Dermatopathology

Trichotillomania (developed fully) vs. Traction alopecia (end stage)

An inflammatory process, caused by the spirochete Treponema pallidum, that tends to evolve through three stages, namely, primary (typified usually by a solitary chancre), secondary (characterized by widespread macules and papules on skin and mucous…

Differential Diagnosis in Dermatopathology

Discussions

…and the various types of keratoacanthoma, among them those in glabrous skin, e.g., “the solitary,” the eruptive, and the so-called giant, that subungual, and that on mucous membranes. Squamous-cell carcinomas may develop at sites of chron…