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Sexual and Reproductive Health

Trichomoniasis (Trich)


Trich is a sexually transmitted infection (STI) caused by a parasite called Trichomonas vaginalis. Trich can be an infection of the vagina and of the tube that carries urine and semen through the penis (urethra).

How do I get trich?

Trich is passed between people through unprotected sex (sexual contact without a condom).

How can I prevent trich?

When you’re sexually active, the best way to prevent trich and other STIs is to use condoms or other barrier methods,​ for oral, vaginal, and anal sex.

Don’t have any sexual contact if you or your partner(s) have symptoms of an STI or may have been exposed to an STI. See a doctor or go to an STI clinic for testing.

Get STI testing every 3 to 6 months and when you have symptoms.

How do I know if I have trich?

Many people with trich have no symptoms, but trich can cause:

  • vaginal discharge that smells musty
  • itching in and around the vagina
  • pain or burning when you pee
  • pain during intercourse

You can still spread trich even if you don’t have symptoms

The best way to find out if you have trich is to get tested. Your nurse or doctor can test you by taking a swab.

Is trich harmful?

If not treated, trich may cause:

  • infertility or low sperm count
  • increased risk of pelvic infections
  • increased risk of getting other STIs and HIV

What if I’m pregnant?

If not treated, trich may cause premature rupture of the membranes, early delivery, and low birth weight. Get tested and treated before delivery to prevent these problems.

How is trich treated?

Trich is treated with antibiotics. It’s important to follow the directions you get with your medicine (like not drinking alcohol while you take the medicine).

Wear cotton underwear and loose clothing to keep the genital area dry and help your body heal faster. You can also use cold packs or soak in a tub to help the itching.

Your partner(s) also needs to be tested and treated even if there are no symptoms. You can get re-infected if you have unprotected sex with someone before they are treated.

When can I have sex again?

It will take 1 week for the antibiotic to get rid of the infection. Don’t have unprotected sex (oral, vaginal, or anal sex without a condom or other barrier method​) for 7 days after you and your partner(s) are treated. The best protection is not to have sex (oral, vaginal, or anal) for at least 7 days..

If you still have symptoms, don’t have any sexual contact.

What if I still have symptoms following treatment?

Please contact your healthcare provider.​

Where can I find more information?

If you have questions, ne​ed to find a clinic near you, or want more information, call Health Link at 811 anytime, day or night, to talk to a registered nurse.​

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