Trichomoniasis overview
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Trichomoniasis also known as Trichomonas Infection [2] sometimes referred to as "trich", is a common sexually transmitted disease that affects 7.4 million previously unaffected Americans each year. It is caused by a single-celled protozoan parasite Trichomonas vaginalis. Trichomoniasis is primarily an infection of the genitourinary tract; The urethra is the most common site of infection in men, and the vagina is the most common site of infection in women. It is most common in women and uncircumsized men. For uncircumsized men, the most common site for the infection is the tip of the penis.
Causes
Trichomoniasis is caused by the single-celled protozoan parasite, Trichomonas vaginalis. The vagina is the most common site of infection in women, and the urethra (urine canal) is the most common site of infection in men.
Risk Factors
Higher prevalence among persons with multiple sexual partners or other venereal diseases.
Diagnosis
Physical Examination
For both men and women, a health care provider must perform a physical examination and laboratory test to diagnose trichomoniasis. The parasite is harder to detect in men than in women. In women, a pelvic examination can reveal small red ulcerations (sores) on the vaginal wall or cervix.