title: Vitamin B-12 induced acnes.
abstract: A type of acne induced by vitamin B-12 deserves a special place among acneiform eruptions. The eruption is monomorphic and of a particular type. It consists of voluminous folliculitis lesions which develop acutely after the first injections of vitamin B-12 and disappear rapidly when treatment is discontinued. The etiologic and pathogenic mechanisms of the disease are not know.
mesh_terms: D000152:Acne Vulgaris / Q000139:chemically induced*; D000328:Adult; D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications; D014805:Vitamin B 12 / Q000009:adverse effects*
chemical_list: D014805:Vitamin B 12