In 1995 the National Institutes of Health-National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) workshop reached a consensus on the definition and classification of prostatitis syndromes.The commonest and yet most poorly understood of these prostatitis syndromes is category III or chronic pelvic pain syndrome (CPPS). It has been shown that, while men with CPPS have significantly higher leukocyte counts in urine and expressed prostatic secretions compared with age matched controls, inflammation and infection do not necessarily correlate with symptom severity.