Skin Disorders Guide

Diagnostic Hallmarks

Distribution - trunk, buttocks, and thighs
Stability of plaque shape and size

Parapsoriasis is not, of itself, a very important disease. It is uncommonly encountered, is not contagious, and probably is not be cured, Its importance lies in its relationship to the cutaneous T-cell lymphoma (CTCL) mycosis fungoides. These two diseases exist on a spectrum [...]

Diagnostic Hallmarks

Distribution: the groin and exposed areas of the arms and legs
Bacterial culture
Response to therapy
Clinical Presentation
The small I-2-mm pustules of bacterial folliculitis are yellow-white in color and are surrounded by a narrow ring of erythema. Those that are pierced by a hair are acuminate (pointed), those that are not are dome-shaped. Only a few pustules [...]

Diagnostic Hallmarks

Distribution: trunk, but palm and sole involvement IS characteristic when present
Target lesions
Papules and plaques are similar but less transient than those in urticaria

Clinical Presentation
Erythema multiforme is characterized by the presence of flat-topped, sharply marginated papules 1 to 2 cm in diameter. The color is generally duskier than the hright red of urticarial lesions. Typically, [...]

Diagnostic Hallmarks

Distribution: areas of solvent exposure or maceration (weak irritant), areas conforming to patient history of specific contact (strong irritant)
Discontinuation of exposure leads to improvement

Presentation
The relatively common problem of irritant contact dermatitis occurs because of environmental damage to the outer layers of the epidermis. Two types of irritant contact dermatitis are recognized that resulting [...]