4. What are the symptoms?
Most of the infected males have no symptoms, and this is also true for about half of the infected females. If symptoms do appear in males, they may consist of burning and itching in the urethra during urination and orgasm, and there may even be some discharge from the penis. The symptoms in females may be a greenish or yellowish, foamy, bad-smelling discharge from the vagina. Vaginal intercourse could become painful. A pregnant woman infected with trichomoniasis runs the risk of giving birth prematurely.

5. How is it diagnosed?
Trichomoniasis is diagnosed by looking at the abnormal discharge from the sex organs and by examining a sample of it under a microscope. In females, a sample taken from the cervix and vaginal walls (a so-called pap smear) may also be used for a microscopic examination.