title: Acute psychosis associated with oral trimethoprim-sulfamethoxazole therapy.
abstract: A 74 year old woman became progressively confused and developed visual hallucinations and delusions over a six day period, after the institution of routine oral trimethoprim-sulfamethoxazole therapy for a urinary tract infection. The medication was discontinued, and a marked improvement was noted 36 hours later. There was a complete return to normal mental functioning 60 hours after therapy was discontinued. The relationship between the patient's symptoms with the initiation and discontinuation of the medication suggests that the drug had a causal effect.
authors.affiliation: Department of Gastroenterology, University of Western Ontario, London.
authors.forename: J C
authors.initials: JC
authors.lastname: Gregor
authors.forename: C A
authors.initials: CA
authors.lastname: Zilli
authors.forename: I H
authors.initials: IH
authors.lastname: Gotlib
mesh_terms: D000368:Aged; D003702:Delusions / Q000139:chemically induced / Q000523:psychology; D004305:Dose-Response Relationship, Drug; D004927:Escherichia coli Infections / Q000188:drug therapy*; D005260:Female; D006212:Hallucinations / Q000139:chemically induced / Q000523:psychology; D006622:Hip Prosthesis; D006801:Humans; D008609:Mental Status Schedule; D011183:Postoperative Complications / Q000139:chemically induced / Q000188:drug therapy* / Q000523:psychology; D011605:Psychoses, Substance-Induced / Q000209:etiology* / Q000523:psychology; D015662:Trimethoprim, Sulfamethoxazole Drug Combination / Q000009:adverse effects* / Q000627:therapeutic use; D014552:Urinary Tract Infections / Q000188:drug therapy*
chemical_list: D015662:Trimethoprim, Sulfamethoxazole Drug Combination