Trichomonas vaginalis is a microscopic parasite found worldwide. Infection with Trichomonas is called trichomoniasis (trick-oh-moe-nye-uh-sis). Trichomoniasis is one of the most common sexually transmitted diseases (STDs), mainly affecting sexually active women. In North America, it is estimated that more than 8 million new cases are reported each year.
How Is Trichomoniasis Spread?
Trichomoniasis is spread through sexual activity. Infection is more common in women who have had multiple sexual partners.
A common misbelief is that infection can be spread by a toilet seat. This isn't likely, since the Trichomonas parasite cannot live long in the environment or on objects.
What Are Trichomoniasis Symptoms?
Not all people with trichomoniasis have symptoms of the infection. However, some of the more common symptoms are as follows.
Symptoms of Trichomoniasis in Women
In women, symptoms of infection range from having no symptoms (asymptomatic) to severe symptoms. Typical symptoms include:
- Foul-smelling or frothy green discharge from the vagina
- Vaginal itching
- Redness.
Other symptoms can include painful sexual intercourse, lower abdominal discomfort, and the urge to urinate.
The onset of symptoms, such as vaginal or vulval itching and discharge, is often sudden and occurs during or after menstruation as a result of the increased vaginal acidity.
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