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A Clinical Atlas of 101 Common Skin Diseases

Acanthosis Nigricans

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Pigmented plaques formed by confluence of smooth-surfaced soft papules, some of which may become polypoid, traversed by accentuations of skin folds.

A Clinical Atlas of 101 Common Skin Diseases

Acne Vulgaris

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A disease of infundibulosebaceous units, especially infundibula, that may manifest itself solely as noninflammatory lesions, i.e., comedones and intact cysts, or as inflammatory lesions, i.e., papules, nodules, and pustules.

A Clinical Atlas of 101 Common Skin Diseases

Allergic Contact Dermatitis

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Allergic contact dermatitis is an inflammatory process induced by direct contact of the skin of a sensitized individual to an allergen.

A Clinical Atlas of 101 Common Skin Diseases

Allergic (Leukocytoclastic) Vasculitis

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A systemic inflammatory process involving venules by deposits of fibrin within their wall in conjunction with neutrophils and nuclear “dust” of neutrophils in the dermis and, at times, the subcutaneous fat.

A Clinical Atlas of 101 Common Skin Diseases

Alopecias