Urethritis

Urethritis is swelling and irritation (inflammation) of the urethra. The urethra is the tube that carries urine from the body.

Causes, incidence, and risk factors

Urethritis may be caused by bacteria or a virus. The same bacteria that cause urinary tract infections (E. coli) and some sexually transmitted diseases (chlamydia, gonorrhea) can lead to urethritis. Viral causes of urethritis include herpes simplex virus and cytomegalovirus. Other causes include injury and sensitivity to the chemicals used in spermicides or contraceptive jellies, creams, or foams