title: Trichomoniasis in men: old issues and new data.
abstract: OBJECTIVE
  Trichomoniasis is common among sexually active women, but its importance as a cause of morbidity among sexually active men remains uncertain.
  
  
  METHODS
  The article outlines areas of controversy and presents pertinent new data from case-control and natural history studies.
  
  
  RESULTS
  Trichomonas vaginalis was documented in 11% of 447 men at risk for a sexually transmitted disease. Although 54% of infected men complained of urethral discharge, the discharge was only mild or moderately severe. Elimination of Trichomonas vaginalis was associated with resolution of urethritis.
  
  
  CONCLUSIONS
  Trichomonas vaginalis is an important consideration in sexually active men with urethral symptoms or inflammation but with little or no evidence of discharge on physical examination.
authors.affiliation: Department of Urology RL-10, University of Washington, School of Medicine, Seattle 98195, USA.
authors.forename: J N
authors.initials: JN
authors.lastname: Krieger
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000818:Animals; D002353:Carrier State / Q000175:diagnosis / Q000453:epidemiology / Q000469:parasitology; D016022:Case-Control Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012307:Risk Factors; D012749:Sexually Transmitted Diseases / Q000469:parasitology*; D014245:Trichomonas Infections / Q000175:diagnosis / Q000453:epidemiology* / Q000469:parasitology; D014246:Trichomonas vaginalis; D014521:Urethra / Q000469:parasitology; D014526:Urethritis / Q000469:parasitology*