 - A clinical diagnosis of chronic prostatitis as evidenced by the following two criteria: 1. Clinical signs and symptoms of prostatitis including a soft, tender prostate without noticeable nodularity with one or more of the following signs or symptoms: painful or difficult urination, suprapubic discomfort, painful ejaculation, low back pain, perineal discomfort, urinary frequency, urinary urgency or hesitancy, decreased urinary stream, urinary retention, pain on digital rectal examination, perineal tenderness or pain, fever, chills. 2. A history of chronic prostatitis as defined as: symptomatic prostatitis - a clinical diagnosis of prostatitis having been made for at least one previous episode that lasted four weeks, or two or more episodes during the previous twelve months. 