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Trichomoiasis can be prevented by practicing safe sex.

Trichomoiasis can be prevented by practicing safe sex.
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Trichomoniasis

Trichomoniasis is an infection caused by a tiny parasite called Trichomonas vaginalis. It usually spreads during sex, but can also be spread by sharing wet towels or washers. Trichomoniasis mostly affects women, but men can get it too. Your doctor or sexual health clinic can test for and treat trichomoniasis.

Trichomoniasis symptoms

Many people with trichomoniasis have no symptoms.

Those who do might notice:

  • a frothy or smelly discharge from the vagina that is yellow, grey or green
  • vaginal itching or burning
  • pain low in the tummy
  • pain during sex or when urinating.

Men don't usually get symptoms from trichomoniasis, but there may be a discharge from the penis, or pain when urinating.

Diagnosis of trichomoniasis

Your doctor is likely to take a sample from inside the vagina to test for trichomoniasis. Men can be checked with a urine test or a swab from the opening of the penis.

If you have trichomoniasis, your doctor may also want to test you for other sexually transmitted infections (STIs).

Trichomoniasis treatment

Trichomoniasis is treated with antibiotics. Most people only need a single large dose, but some may need longer. If you have trichomoniasis, any current sexual partner should be tested and treated too, even if they don’t have any symptoms.

If your symptoms don’t go away after treatment, talk to your doctor or sexual health worker.

Without treatment, trichomoniasis can last months, or even years. It can cause premature labor or increase your risk of getting HIV.

Trichomoniasis prevention

The best way to avoid trichomoniasis is by using condoms every time you have sex. Safe sex also helps stop the spread of other STIs.

To prevent re-infection with trichomoniasis, make sure any partner is treated too. It is best to avoid having sex for seven days after your or your partner's treatment to lower the chance of you both getting the infection again.

Last reviewed: December 2015

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