Overview, Causes, & Risk Factors

Trichomoniasis is a genital infection caused by the protozoa, Trichomonas vaginalis.

What is going on in the body?

Trichomoniasis is a common infection that affects both men and women. It is almost always acquired through sexual contact.

What are the causes and risks of the infection?

Trichomoniasis is a sexually transmitted disease caused by Trichomonas vaginalis.

Symptoms & Signs

What are the signs and symptoms of the infection?

Most of the time, trichomoniasis causes no symptoms. At times, symptoms in women may include the following:

In men, trichomoniasis can cause the following conditions:

Diagnosis & Tests

How is the infection diagnosed?

Diagnosis of trichomoniasis begins with a history and physical exam. The organism can be seen under the microscope.

Prevention & Expectations

What can be done to prevent the infection?

Safer sex practices can minimize a person's risk for trichomoniasis. The best way to prevent the infection is to use a condom with the spermicide nonoxynol-9.

What are the long-term effects of the infection?

With proper treatment, trichomoniasis has no long-term effects.

What are the risks to others?

Trichomoniasis is an STD that is spread to others through unprotected sex.

Treatment & Monitoring

What are the treatments for the infection?

Metronidazole is used to treat trichomoniasis. All sexual partners should be treated. Anyone with trichomoniasis should also be checked for other STDs and treated appropriately.

What are the side effects of the treatments?

Metronidazole can cause nausea, a bad taste in the mouth, and vaginal infection.

What happens after treatment for the infection?

Metronidazole is highly effective against trichomoniasis. The individual should follow safer sex practices to avoid another infection.

How is the infection monitored?

Any new or worsening symptoms should be reported to the healthcare provider.