title: Pseudomembranous colitis following low dose trimethoprim-sulfamethoxazole.
abstract: A 94-year-old man had pseudomembranous colitis while taking low dose trimethoprim-sulfamethoxazole for recurrent urinary tract infection. The suppressive effect of low dose trimethoprim-sulfamethoxazole on normal colonic flora appeared to be a factor in the development of pseudomembranous colitis in this patient.
mesh_terms: D000368:Aged; D000892:Anti-Infective Agents, Urinary / Q000009:adverse effects* / Q000627:therapeutic use; D004338:Drug Combinations / Q000009:adverse effects / Q000627:therapeutic use; D004761:Enterocolitis, Pseudomembranous / Q000139:chemically induced*; D006801:Humans; D008297:Male; D013420:Sulfamethoxazole / Q000009:adverse effects* / Q000627:therapeutic use; D014295:Trimethoprim / Q000009:adverse effects* / Q000627:therapeutic use; D015662:Trimethoprim, Sulfamethoxazole Drug Combination; D014552:Urinary Tract Infections / Q000517:prevention & control
chemical_list: D000892:Anti-Infective Agents, Urinary; D004338:Drug Combinations; D015662:Trimethoprim, Sulfamethoxazole Drug Combination; D014295:Trimethoprim; D013420:Sulfamethoxazole