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).

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Last reviewed 01/2018

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