Trichomonas vaginalis is a microscopic parasite found worldwide. Infection with trichomonas is called trichomoniasis. Trichomoniasis is one of the most common sexually transmitted diseases, mainly affecting 16-to-35-year old women. In the United States, it is estimated that 2 million women become infected each year.

• Primarily through sexual contact
• Exposure to vaginal fluids and semen infected with trichomonas
• The parasite can also live outside the body for several hours and can be spread by sharing damp washcloths, towels, etc. with an infected person.

• Most women develop symptoms within 6 months of infection.
• May have no symptoms
• Discolored discharge with bad odor
• Frequent painful urination
• Inflammation in the genitals (itching and burning)
• Sometimes pain in the lower abdomen

Men

• May have no symptoms
• Painful urination
• Discharge from the penis

• Sample of discharge is examined under a microscope

• Antibiotics

• Discomfort will get worse
• Recurrent infections common – partner(s) must receive treatment at the same time
• Can spread infection to sexual partner(s)