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Trichomoniasis (TV) in heterosexual men

What is trichomoniasis or TV?

  • It is a sexually transmitted infection (STI) caused by a tiny parasite, Trichomonas vaginalis.
  • In men it causes an infection in the urethra (water passage) and lead to pain on passing of urine or a discharge from the tip of the penis
  • Most men will have no symptoms but can still pass the infection on to their sexual partner.
  • It is easily treated with antibiotics.
  • If you have TV we recommend that you should have a full STI screen including a HIV test.  

How common is TV?

  • It is the third most common treatable STI in the UK.
  • It occurs more commonly in Africans and Afro-carribeans.
  • It is more commonly diagnosed in women than men. 

How do you catch TV?

  • TV is a sexually transmitted infection.
  • It is passed on through vaginal sex.
  • You cannot catch it from toilet seats, swimming pools or hot tubs.
  • Most men will be first alerted to a possible infection when their female partner is diagnosed with TV.

What would I notice if I had TV?

  • Most men will not notice anything.
  • Some men may notice one or more of the following:
    • burning or pain when passing urine
    • irritation inside the urethra (water passage)
    • passing urine more frequently
    • discharge from the tip of the penis

How do I get tested for TV?

  • It is best to attend a specialised sexual health clinic where a swab will be taken and immediately examined under a microscope.
  • In men the test for TV is not very accurate so all male partners of women diagnosed with TV are routinely treated to be safe.

How is TV treated?

  • TV can be treated with a short course of antibiotics:
    • Metronidazole 2g single dose


  • Metronidazole 400mg  twice daily for 5 days
  • Avoid alcohol whilst taking metronidazole and for 4 hours following completion.
  • All treatments from the Wolverton Centre are free and are given to you directly in the clinic.

What about my partner?

  • TV is a sexually transmitted infection so it is important that all sexual partners are tested and treated before resuming sex again.

What problems can untreated TV lead to?

  • TV can increase the risk of catching HIV.

Will TV come back again after treatment?

  • If TV is treated correctly it will only recur if you are reinfected.

For more information