Orchitis (or-KIE-tis) is an inflammation of one or both testicles. It is usually caused by a bacterial infection or by the mumps virus.
Bacterial orchitis can be caused by sexually transmitted infections (STIs), particularly gonorrhea or chlamydia. Bacterial orchitis often results from epididymitis, an inflammation of the coiled tube (epididymis) at the back of the testicle that stores and carries sperm. In that case, it's called epididymo-orchitis.
Orchitis causes pain and can affect fertility. Medication can treat the causes of bacterial orchitis and can ease some signs and symptoms of viral orchitis. But it may take several weeks for scrotal tenderness to disappear.
Sept. 09, 2014
- Ferri FF. Ferri's Clinical Advisor 2015: 5 Books in 1. Philadelphia, Pa.: Mosby Elsevier; 2015. https://www.clinicalkey.com. Accessed July 18, 2014.
- AskMayoExpert. What are the causes or types of scrotal masses? Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2013.
- Wein AJ, et al. Campbell-Walsh Urology. 10th ed. Philadelphia, Pa.: Saunders Elsevier; 2011. http://www.clinicalkey.com. Accessed July 22, 2014.
- AskMayoExpert. What evaluation and treatment are indicated for orchitis as a cause of pediatric testicular or scrotal pain? Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2014.
- Eyre RC, et al. Evaluation of the acute scrotum in adults. http://www.uptodate.com/home. Accessed July 18, 2014.
- Schaeffer AJ. Complications of urinary bladder catheters and preventive strategies. http://www.uptodate.com/home. Accessed July 18, 2014.
- Castle EP (expert opinion). Mayo Clinic, Phoenix, Ariz. Aug. 13, 2014.
You Are ... The Campaign for Mayo Clinic
Mayo Clinic is a not-for-profit organization. Make a difference today.