trichomoniasis (infection with Trichomonas vaginalis (TV))

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Trichomoniasis is a result of infection with Trichomonas vaginalis (TV), causing a sexually transmitted disease

  • TV is a flagellated protozoan

Women with TV commonly complain of vaginal discharge and dysuria (due to urethral infection).

TV is always sexually transmitted and is a rarer condition than bacterial vaginosis or vulvovaginal candidiasis

Possible sites affected include:

  • the vagina
  • urethra - both male and female
  • bladder (occasionally)
  • under foreskin
  • paraurethral glands (1)

It is the second most common cause of vaginal discharge, after candidiasis.

It is only rarely recognised in the male and is more common in Afro-Caribbeans than whites.

A total of 6029 new diagnosis of trichomoniasis were made by GUM clinics in the UK in 2007, out of which 5592 were in women and 437 were in men (2).



Last reviewed 01/2018