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Stings and Bites
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Nail Diseases
Abstract Nails disorders, in addition to being a disease sui generis (e.g., onychomycosis), can also be a marker for an internal disorder. For example, clubbing may be a manifestation of an internal cardiopulmonary disease, including malignancy. Other entities that are…
Cutaneous Manifestations of Internal Disease
Abstract This appendix includes photographs of cutaneous manifestations of internal diseases broken into broad categories, including endocrine/metabolic, hematologic, rheumatologic, gastrointestinal, neurocutaneous, infectious, and renal diseases. Also included is a section of cutaneous manifestations of systemic disease. Some of the disorders…
Topical Steroids
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Diseases and Disorders
1 Acanthosis Nigricans General Comments Definition Acanthosis nigricans (AN) refers to the presence of symmetrical, brown, velvety, or verrucous plaques with a predilection for intertriginous sites, including the back of the neck, groin, and axillae ( Fig. 3.1 ). Etiology…
Differential Diagnosis
1 Alopecia, Nonscarring Alopecia areata Anagen effluvium Androgenetic alopecia Cosmetic treatment Structural hair shaft disease Telogen effluvium Tinea capitis Trichotillomania (hair pulling) 2 Alopecia, Scarring Bacterial folliculitis Central centrifugal scarring alopecia Congenital (aplasia cutis) Discoid lupus erythematosus Folliculitis decalvans Lichen…
Evaluation of Skin Disorders
A History and Physical Examination The initial step in the dermatologic evaluation involves obtaining a detailed dermatologic history. Box 1.1 describes pertinent questions. BOX 1.1 Dermatologic History From Goldstein BG, Goldstein AO: Practical Dermatology, ed 2, St. Louis, 1997, Mosby.…