Chlamydia is a type of bacteria. There are several different species of chlamydia. A number of strains within each species are responsible for a variety of diseases in birds, humans, and other mammals. Their most common appearance is as a sexually transmitted disease (STD) referred to as chlamydia or nongonococcal urethritis (NGU).
Chlamydia is one of the most common STDs in the US, especially among sexually active teens and young adults. Prevalence is highest in people 25 years old and younger.
Chlamydia can lead to Reiter’s syndrome, which is a triad of arthritis, conjunctivitis, and urethritis. It can also cause neonatal infections such as pneumonia or conjunctivitis when passed from an infected mother. It can also cause infections in the throat or rectum through oral or anal intercourse.
Other types of chlamydia can cause:
Genital chlamydial infections are caused when Chlamydia trachomatis is transmitted during oral, vaginal, or anal sex from an infected partner.
What are the risk factors for chlamydia?
What are the symptoms of chlamydia?
How is chlamydia diagnosed?
What are the treatments for chlamydia?
Are there screening tests for chlamydia?
How can I reduce my risk of chlamydia?
What questions should I ask my doctor?
Where can I get more information about chlamydia?
Chlamydia. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/std/chlamydia/default.htm. Updated April 30, 2013. Accessed May 16, 2013.
Chlamydia genital infection. EBSCO DynaMed website. Available at: https://dynamed.ebscohost.com/about/about-us. Updated March 13, 2013. Accessed May 16, 2013.
Chlamydia fact sheet. US Department of Health and Human Services Women's Health website. Available at: hhttp://www.womenshealth.gov/publications/our-publications/fact-sheet/chlamydia.cfm. Updated July 8, 2011. Accessed May 16, 2013.
Workowski KA, Berman S, Centers for Disease Control and Prevention. Sexually Transmitted Diseases Treatment Guidelines, 2010. MMWR. 2010;59(No. RR-12):1-110.
Last reviewed May 2013 by Brian Randall, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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