Skin, the largest human organ, is a complex and dynamic ecosystem inhabited by a
multitude of microorganisms. Host demographics and genetics, human behavior, local and …

Ashy dermatosis (AD), lichen planus pigmentosus (LPP), erythema dyschromicum perstans
(EDP), and idiopathic eruptive macular pigmentation are several acquired macular …

Thoroughly revised and up-dated, this comprehensive, authoritative reference will help both
the experienced and novice practitioner diagnose skin diseases and disorders more …

Differences in cutaneous diseases in people of color call for nuanced evaluation and
management. One of the most common dermatological complaints from patients with skin of …

Abnormal skin pigmentation represents a common skin problem which may be congenitally
determined or acquired during life. The former are discussed in Chapter [70]. Acquired …

Objective Erythema dyschromicum perstans (EDP) can be difficult to diagnose and treat;
therefore, we reviewed the literature to assess whether histology can be used to differentiate …

Ashy dermatosis is characterized by asymptomatic, symmetrically-distributed, gray-colored
macules located on the trunk, neck, face, and upper extremities. The condition occurs most …

A 39-year-old Hispanic man presented with widespread, symmetric, hyperpigmented, brown-
gray-blue, oval-to-circular, discrete and coalescing patches on the upper extremities, trunk …

Acquired macular pigmentation of unknown etiology is a new umbrella term that
encompasses a group of diseases that, while having similar clinical and histological …

Background Actinic prurigo (AP) is an idiopathic photodermatosis that usually onsets during
childhood and predominates in women. It is characterized by the symmetrical involvement of …