Delayed hypersensitivity to erythromycin.
D000368:Aged; D004342:Drug Hypersensitivity / Q000209:etiology*; D004917:Erythromycin / Q000009:adverse effects*; D005260:Female; D006801:Humans; D006968:Hypersensitivity, Delayed / Q000139:chemically induced; D007871:Leg Ulcer / Q000188:drug therapy
D004917:Erythromycin