Jump to content


From Wikipedia, the free encyclopedia
Other namesProstatosis
Micrograph showing an inflamed prostate gland, the histologic correlate of prostatitis. A normal non-inflamed prostatic gland is seen on the left of the image. H&E stain.

Prostatitis is an umbrella term for a variety of medical conditions that incorporate bacterial and non-bacterial origin illnesses in the pelvic region. In contrast with the plain meaning of the word (which means "inflammation of the prostate"), the diagnosis may not always include inflammation. Prostatitis is classified into acute, chronic, asymptomatic inflammatory prostatitis, and chronic pelvic pain syndrome.

In the United States, prostatitis is diagnosed in 8% of all male urologist visits and 1% of all primary care physician visits for male genitourinary symptoms.[1]


The term prostatitis refers to inflammation of the tissue of the prostate gland. It may occur as an appropriate physiological response to an infection, or it may occur in the absence of infection.[2]

In 1999, the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) devised a new classification system.[3][4] For more specifics about each type of prostatitis, including information on symptoms, treatment, and prognosis, follow the links to the relevant full articles.

Category Current name Old name Pain Bacteria WBCs Description
I Acute prostatitis Acute bacterial prostatitis Yes Yes Yes Bacterial infection of the prostate gland that requires urgent medical treatment.
II Chronic bacterial prostatitis Chronic bacterial prostatitis ± Yes Yes A relatively rare condition that usually presents as intermittent urinary tract infections.
IIIa Inflammatory CP/CPPS Nonbacterial prostatitis Yes No Yes Accounts for 90–95% of prostatitis diagnoses,[5] formerly known as chronic nonbacterial prostatitis'.
IIIb Noninflammatory CP/CPPS Prostatodynia Yes No No
IV Asymptomatic inflammatory prostatitis (none) No No Yes No history of genitourinary pain complaints, but leukocytosis is noted, usually during evaluation for other conditions. Between 6 and 19% of men have pus cells in their semen but no symptoms.[6]

In 1968, Meares and Stamey determined a classification technique based upon the culturing of bacteria.[7] This classification is no longer used.

The conditions are distinguished by the different presentation of pain, white blood cells (WBCs) in the urine, duration of symptoms and bacteria cultured from the urine. To help express prostatic secretions that may contain WBCs and bacteria, prostate massage is sometimes used.[8]

See also[edit]


  1. ^ Collins MM, Stafford RS, O'Leary MP, Barry MJ (1998). "How common is prostatitis? A national survey of physician visits". J. Urol. 159 (4): 1224–8. doi:10.1016/S0022-5347(01)63564-X. PMID 9507840.
  2. ^ Kirby, Roger; Carson, Culley C. (January–February 2015). "Editor's Comment on Diagnosis and treatment of chronic prostatitis/chronic pelvic pain syndrome". Trends in Urology and Men's Health. 6 (1): 17. doi:10.1002/tre.434.
  3. ^ Krieger JN, Nyberg L, Nickel JC (July 1999). "NIH consensus definition and classification of prostatitis". JAMA. 282 (3): 236–7. doi:10.1001/jama.282.3.236. PMID 10422990.
  4. ^ J. Curtis Nickel (1999). Textbook of prostatitis. Taylor & Francis. pp. 27–. ISBN 978-1-901865-04-2. Retrieved 18 April 2010.
  5. ^ Habermacher GM, Chason JT, Schaeffer AJ (2006). "Prostatitis/chronic pelvic pain syndrome". Annu. Rev. Med. 57: 195–206. doi:10.1146/annurev.med.57.011205.135654. PMID 16409145.
  6. ^ Korrovits P, Ausmees K, Mändar R, Punab M (June 2008). "Prevalence of asymptomatic inflammatory (National Institutes of Health Category IV) prostatitis in young men according to semen analysis". Urology. 71 (6): 1010–5. doi:10.1016/j.urology.2007.12.082. PMID 18455767.
  7. ^ Meares EM, Stamey TA (March 1968). "Bacteriologic localization patterns in bacterial prostatitis and urethritis". Invest Urol. 5 (5): 492–518. PMID 4870505.
  8. ^ "Prostatitis: Benign Prostate Disease: Merck Manual Professional". Archived from the original on 2011-09-25. Retrieved 2011-07-11.

External links[edit]