progressive pigmentary dermatosis

dermatosis /der·ma·to·sis/ (der″mah-to´sis) pl. dermato´ses   any skin disease, especially one not characterized by inflammation.

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dermatosis papulo´sa ni´gra  a form of seborrheic keratosis seen chiefly in blacks, with multiple miliary pigmented papules usually on the cheek bones, but sometimes occurring more widely on the face and neck.

progressive pigmentary dermatosis  Schamberg's disease.

subcorneal pustular dermatosis  a bullous dermatosis resembling dermatitis herpetiformis, with single and grouped vesicles and sterile pustular blebs beneath the stratum corneum of the skin.

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progressive pigmentary dermatosis

n.

A chronic skin disorder resulting from hemorrhages into the skin, chiefly on the legs of young men, and characterized by purple patches that spread and turn brown. Also called Schamberg's disease.