Trichomoniasis (trick-oh-moe-nye-uh-sis) is one of the most common sexually transmitted infections (STIs). According to the Centers for Disease Control (CDC), an estimated 7.4 million new cases of trichomoniasis occur in men and women every year in the United States.
The disease is caused by a parasite called Trichomonas vaginalis. It is primarily an infection of the urogenital tract. The vagina is the most common place for the infection in women, and the urethra is the most common place in men.
Trichomoniasis, like many other sexually transmitted diseases (STDs), often occurs without any symptoms, especially in men.
When women have symptoms, they usually appear within 5 to 28 days after exposure to the parasite.
- Heavy, yellow-green or gray vaginal discharge
- Discomfort during sex
- Vaginal odor
- Painful urination.
They may also have irritation and itching of the genital area and, on rare occasions, lower abdominal pain (stomach pain).
If present, the symptoms in men include a thin, whitish discharge from the penis and painful or difficult urination and ejaculation.