DefinitionBy Mayo Clinic staff
Prostatitis is swelling and inflammation of the prostate gland, a walnut-sized gland located directly below the bladder in men. The prostate gland produces fluid (semen) that nourishes and transports sperm. Prostatitis often causes painful or difficult urination. Other symptoms of prostatitis include pain in the groin, pelvic area or genitals, and sometimes, flu-like symptoms.
Prostatitis can be caused by a number of different things. If it's caused by a bacterial infection, it can usually be treated successfully. However, sometimes prostatitis isn't caused by a bacterial infection or a cause is never identified.
Depending on the cause, prostatitis may come on gradually or suddenly. It may get better quickly, either on its own or with treatment. Some types of prostatitis last for months or more or keep recurring (chronic prostatitis).
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