A common vaginal disease caused by Trichomonas vaginalis, a single-celled parasite.

Trichomoniasis is a type of vaginitis, and symptoms can include itching, burning, unpleasant odors, and discharge. Yeast infections and bacterial vaginosis cause similar symptoms, and a physician needs to confirm the cause of vaginal diseases before providing treatment. Most infections are curable with a round of antibiotics.

Both men and women can contract the parasite that causes trichomoniasis, but most men will not report symptoms. Because trichomoniasis is a sexually transmitted infection, if a woman is sexually active, her partners will also need to undergo treatment.

Latex condoms can help to prevent the spread of trichomoniasis.