title: Clopidogrel hypersensitivity syndrome with rash, fever, and neutropenia.
abstract: We report a case of a severe hypersensitivity syndrome reaction to clopidogrel that resolved with dechallenge and recurred on rechallenge. The reaction included neutropenia, rash, fever, tachycardia, nausea, and vomiting. This presentation is very similar to the frequently reported hypersensitivity syndrome reactions to the structurally similar drug ticlopidine and is very similar to a case involving clopidogrel reported previously in this Journal. We could find no other reports of similar cases related to clopidogrel.
authors.affiliation: Department of Clinical Pharmacology, Christchurch Hospital, Christchurch, New Zealand. matthewd@cdhb.govt.nz
authors.forename: Matthew P
authors.initials: MP
authors.lastname: Doogue
authors.forename: Evan J
authors.initials: EJ
authors.lastname: Begg
authors.forename: Paul
authors.initials: P
authors.lastname: Bridgman
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary; D000077144:Clopidogrel; D003327:Coronary Disease / Q000628:therapy; D004342:Drug Hypersensitivity / Q000175:diagnosis / Q000209:etiology*; D005260:Female; D005334:Fever / Q000139:chemically induced; D006801:Humans; D009325:Nausea / Q000139:chemically induced; D009503:Neutropenia / Q000139:chemically induced; D010975:Platelet Aggregation Inhibitors / Q000009:adverse effects*; D015607:Stents; D013577:Syndrome; D013610:Tachycardia / Q000139:chemically induced; D013988:Ticlopidine / Q000009:adverse effects / Q000031:analogs & derivatives*; D014839:Vomiting / Q000139:chemically induced
chemical_list: D010975:Platelet Aggregation Inhibitors; D000077144:Clopidogrel; D013988:Ticlopidine