Penicillin allergy.
D002648:Child; D002675:Child, Preschool; D004342:Drug Hypersensitivity / Q000209:etiology* / Q000276:immunology; D006801:Humans; D007073:Immunoglobulin E / Q000276:immunology; D007223:Infant; D010406:Penicillins / Q000009:adverse effects* / Q000276:immunology; D012882:Skin Tests / Q000379:methods
D010406:Penicillins; D007073:Immunoglobulin E