Trichomonas infection Pokenga paipai pirinoa

Trichomonas infection is a sexually transmitted infection caused by a small parasite. It is passed on by having sex, sexual contact or sharing a sex toy, for example a vibrator, with someone with the infection. Using a condom is the best way to protect yourself from this infection, or passing it on.

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Symptoms of trichomonas

Many people do not have symptoms with trichomonas infection.

If you do get symptoms, they usually develop 1 to 4 weeks after contact with an infected person. 

Symptoms include:

  • a greenish, watery discharge from the vagina that may be smelly 
  • swollen and sore vulva and opening to the vagina
  • redness and irritation that can spread to the upper thighs
  • itching or pain when weeing (urinating)
  • discharge from the penis
  • inflammation of the head of the penis. 

Diagnosing trichomonas

Trichomonas can be diagnosed from a vaginal swab sent to a laboratory for testing. 

It is difficult to identify and diagnose in people with a penis. A swab from the penis or a urine sample may be taken. 

You can get tested at:

You may also be offered testing for other sexually transmitted infections. 

Treating trichomonas

Trichomonas is treated with antibiotics. Your sexual partners will need to be treated at the same time. 

Avoid sex or use condoms until 7 days after you have been treated.