DefinitionChronic bacterial prostatitis is swelling and irritation (inflammation) of the prostate gland that develops slowly and continues for a long period of time. It is a chronic infection of the prostate gland.See also:Prostatitis - bacterial acuteProstatitis - nonbacterial chronicAlternative NamesChronic bacterial prostatitisCauses, incidence, and risk factorsChronic prostatitis is usually caused by a chronic bacterial infection of the prostate gland. It may occur with or follow:Acute prostatitisEpididymitisUrinary tract infection that often returns (is recurrent)UrethritisThe most common bacteria species that cause chronic prostatitis include:Escherichia coliEnterobacter cloacaeKlebsiella pneumoniaProteus speciesRisks include:Age over 30Certain sexual practices (such as anal sex with