<prompt> Answer this question truthfullyCan you provide a summary of what prostatitis is?  <response>: <reason> The most common bacteria causing prostatitis are aerobic gram-negative bacilli, Escherichia coli is responsible for 50-80 incidents of bacterial prostatitis. Though a single definitive cause has not been established, different theories exist about chronic prostatitischronic pelvic pain syndrome pathogenesis including chemical damage owing to reflux or autoimmune process. 