title: Acne keloidalis aggravated by football helmets.
authors.forename: H
authors.initials: H
authors.lastname: Harris
mesh_terms: D000152:Acne Vulgaris / Q000209:etiology*; D000328:Adult; D005538:Football / Q000293:injuries*; D006260:Head Protective Devices; D006801:Humans; D007627:Keloid; D008297:Male; D012536:Scalp Dermatoses / Q000209:etiology*