Trichomoniasis is a common sexually transmitted disease (STD). It often affects the lower genital tract in women and inside of the penis in men.
Trichomoniasis is caused by a specific parasite. The parasite is passed through sexual contact. It mainly affects genital tissue.
Factors that may increase your chance of trichomoniasis include:
Trichomoniasis does not always cause symptoms. Men are less likely to have symptoms than women.
Symptoms in women may include:
Symptoms in men may include:
You will be asked about your symptoms and medical history. A physical exam will be done. Vaginal fluid or discharge will be examined from women. Urine, semen, or penile discharge will be examined from men. The samples can be sent to a lab to confirm trichomoniasis.
Trichomoniasis is can be treated with antibiotics. The antibiotic may be given in a single dose or a weeklong course.
Trichomoniasis is easily passed back and forth between sexual partners. Your partner(s) should also be treated, even if symptoms are not present. An infected person can infect their sexual partners even if they do not have symptoms.
Avoid sex until your treatment is done and your symptoms are gone.
To help prevent sexually transmitted diseases (STDs) like trichomoniasis:
Centers for Disease Control and Prevention
The American Congress of Obstetrics and Gynecology
Sex Information and Education Council of Canada
Sexuality and U—The Society of Obstetricians and Gynaecologists of Canada
Trichomoniasis. Centers for Disease Control and Prevention website. Available at:
http://www.cdc.gov/std/trichomonas/STDFact-Trichomoniasis.htm. Updated April 28, 2015. Accessed May 28, 2015.
Trichomoniasis. EBSCO DynaMed Plus website. Available at:
http://www.dynamed.com/topics/dmp~AN~T116226/Trichomoniasis. Updated March 17, 2016. Accessed September 14, 2016.
National Institute of Allergy and Infectious Diseases website. Available at:
http://www.niaid.nih.gov/topics/trichomoniasis/Pages/default.aspx. Updated February 28, 2013. Accessed May 28, 2015.
Workowski KA, Berman S, Centers for Disease Control and Prevention. Sexually Transmitted Diseases Treatment Guidelines, 2010.
Last reviewed May 2016 by David L. Horn, MD
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