Trichomoniasis is a common STI caused by a tiny parasite called Trichomonas vaginalis.
TV can be difficult to diagnose because there may not be any symptoms, and when there are symptoms, they can be similar to those of other conditions and STIs.
Women are more likely to have symptoms than men. They may have soreness and itching around the vagina and a change in vaginal discharge, while men may experience pain after urination and ejaculation.
Tests and treatment
A high vaginal swab can be taken from women to check for TV. If a woman is found to have it, treatment will be offered to her sexual partner(s).
Most men and women are treated with an antibiotic called metronidazole, which is very effective. TV rarely causes complications.