title: Lichen nitidus. A study of forty-three cases.
abstract: Among forty-three cases of lichen nitidus studied, twenty-one patients were Caucasian, twenty-one were Negro, and one was Spanish-American, ranging in age from five to fifty-eight years. The arm, forearm, trunk, and genitalia were sites most commonly involved. Clinically, the eruption usually appeared as tiny papules. Histologically, the papules showed a parakeratotoic "cap," epidermal atrophy, liquefaction degeneration of the basal layer, and a dermal infiltrate of lymphocytes, epithelioid cells, and sometimes giant cells.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008010:Lichen Planus / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D010241:Parakeratosis / Q000473:pathology; D011537:Pruritus / Q000209:etiology; D012737:Sex Factors; D012871:Skin Diseases / Q000150:complications / Q000175:diagnosis / Q000473:pathology*