Long-term effects of trichomoniasis

Trichomoniasis is a sexually transmitted infection caused by a parasite. Some people have few or no symptoms, while others notice vaginal discharge, irritation, itching, discomfort during sex, or burning when urinating. An untreated infection may remain present for months or longer, and reinfection can happen if a sexual partner is not treated. In pregnancy, infection needs medical attention because it can be associated with pregnancy complications. Trich does not mean that a person has been unfaithful; it can be difficult to know when an infection began.

Symptoms can overlap with thrush, bacterial vaginosis, or other infections. A clinical assessment and laboratory test are needed to identify the cause. Explore information about [Vaginal Discharge](/symptoms/vaginal-discharge/) or [Vaginal Itching](/symptoms/vaginal-itching/) if those symptoms are troubling you.

Arrange testing if you have symptoms, a partner with trichomoniasis, or a recent sexual exposure. Take the prescribed medicine exactly as directed and complete the course. Current and recent sexual partners may need assessment and treatment, even without symptoms, to reduce reinfection. Avoid sex until you and your partner or partners have completed treatment and a clinician says it is appropriate to resume. Use condoms consistently afterward to lower the chance of another sexually transmitted infection. A clinician can discuss [Antibiotic Treatment for Pelvic Infection](/treatments/medical-gynaecology/antibiotic-treatment-for-pelvic-infection/) when pelvic infection is a concern.

Seek prompt medical care for pelvic or lower abdominal pain, fever, vomiting, pain during sex, bleeding after sex, or feeling faint. Contact a maternity service promptly if you are pregnant and have symptoms or a confirmed infection. Urgent help is needed for severe pain, heavy bleeding, collapse, or difficulty breathing. Arrange follow-up if symptoms continue after treatment or return, because this can reflect reinfection, another condition, or a need for repeat testing.

Ask which test is appropriate, whether partners need treatment, when sex can safely resume, whether you need testing for other sexually transmitted infections, and what to do if symptoms return.