Trichomoniasis is a sexually transmitted infection that in women can cause a foul-smelling vaginal discharge, genital itching and painful urination. Men who have trichomoniasis typically have no symptoms. Pregnant women who have trichomoniasis are at higher risk of delivering prematurely.
To prevent reinfection with the organism that causes trichomoniasis, both partners should be treated. The most common treatment for trichomoniasis involves taking one megadose of metronidazole (Flagyl). You can reduce your risk of infection by using condoms correctly every time you have sex.