Treatment is successful more than 90 percent of the time. Usually there is a heavy vaginal discharge. It is grayish and frothy and has an unpleasant odor. Diagnosis usually is made by microscopic examination of the discharge. It may also be tested with chemicals.
Treatment is optional when the infection is mild.
Many women have no symptoms. Men rarely have symptoms. It may take years for them to appear. Diagnosis is by microscopic examination of vaginal discharge. You may become infected again if your partner isn't treated.