What is trichomonas vaginalis?

Several different organisms can cause vaginal discharge and irritation (vaginitis). The most common organisms being :-

• The parasite, trichomonas vaginalis.
• The bacteria gardnerella vaginalis (bacterial vaginosis).
• The yeast candida (that causes thrush

Trichomonas Vaginalis (T.V.), 'trich' or trichomoniasis is caused by a tiny parasite. T.V. mostly infects the vagina in women, but occasionally it may infect the urethra in men.

T.V. is usually sexually transmitted, caused by penetrative vaginal sex where the penis enters the vagina. The parasite doesn't grow well in the anus, mouth or penis.

On very rare occasions, T.V. can be spread by sharing moist towels, washcloths or even from Jacuzzis and hot baths.

What are the symptoms of trichomonas vaginalis?

Like many other sexually transmitted diseases, there may be no symptoms with T.V. , especially in men, but if there are they may include:-

In women: -

• A vaginal discharge, yellow/green in colour, which may smell unpleasant and look frothy.
• Soreness, itching and inflammation in and around the vagina.
• Frequent need to urinate and/or pain on urinating.
• Pain when having sex.

In men: -

• Penile discharge.
• Pain when passing urine.

If you are worried that you have a sexually transmitted disease you should always visit your local G.U.M. clinic (though it doesn’t have to be a local clinic) or doctor.

How is trichomonas vaginalis diagnosed?

If you go to your doctor he/she may examine your genital area, and a sample may be taken from the vagina or urethra using a cotton wool swab (similar to a cotton bud). You may also be asked to give a urine sample.

We have a simple test on this website which can be used to indicate whether an abnormal vaginal discharge is caused by bacterial, parasitic infections or yeast infection(thrush). For more information on this test or to buy click here.

Is trichomonas vaginalis easily treated?

Yes, T.V. is treated with a course of antibiotics. All regular and recent partners should also be checked and treated if necessary. You should avoid sex until the doctor or clinic has given you the all-clear.

What are the effects of trichomonas vaginalis if left untreated?

Complications with T.V. are rare, if a woman is infected when she gives birth, she may pass it on to the baby if it’s a girl.

A lot of people infected with T.V. are usually found to have gonorrhoea as well.