| NIH Class
|
Syndrome
|
Notes
|
| I
|
Acute bacterial prostatitis
|
Symptoms of UTI with bacteriuria
|
| II
|
Chronic bacterial prostatitis
|
Recurrent episodes of UTI with same organism
|
| III
|
Chronic prostatitis/chronic pelvic pain syndrome
|
90% of cases; symptoms primarily of pain with the exclusion of other causes
|
| IIIA
|
Inflammatory
|
Leukocytes present in prostatic secretions or semen
|
| IIIB
|
Non-inflammatory
|
Leukocytes not present
|
| IV
|
Asymptomatic inflammatory prostatitis
|
Asymptomatic and discovered incidentally on biopsy or other investigation
|
