Trichomoniasis is a sexually-related disease that is caused by a protozoa organism, which lives in the lining of the vaginal walls and produces an odorous, foamy, irritating discharge. Symptoms might also include pain during intercourse, pain during urination and itching around the vulva.

Trichomoniasis, or Trich, can be passed between sexual partners. If one partner becomes infected with Trich, his or her sexual partners should also be treated so the disease does not continue to pass between them. Trich can be cured with antibiotics.

Got a question about STDs? Call the CDC's national hotline at 1-800-227-8922, open 24/7.