http://kidney.niddk.nih.gov/kudiseases/pubs/prostatitis/
Prostatitis may account for up to 25 percent of all office visits by young and middle-aged men for complaints involving the genital and urinary systems. Includes information about the four types of prostatitis: acute bacterial prostatitis, chronic bacterial prostatitis, chronic prostatitis/chronic pelvic pain syndrome, and asymptomatic inflammatory prostatitis.