title: A complicated case of penicillin allergy.
mesh_terms: D000368:Aged; D003888:Desensitization, Immunologic; D004342:Drug Hypersensitivity / Q000209:etiology*; D006801:Humans; D008297:Male; D010406:Penicillins / Q000009:adverse effects*; D012713:Serum Sickness / Q000139:chemically induced
chemical_list: D010406:Penicillins