abscess

Abscess

Last reviewed: August 14, 2010.
An abscess is a collection of pus in any part of the body that, in most cases, causes swelling and inflammation around it.
Causes, incidence, and risk factors
Abscesses occur when an area of tissue becomes infected and the body's immune system tries to fight it. White blood cells move through the walls of the blood vessels into the area of the infection and collect within the damaged tissue. During this process, pus forms. Pus is the buildup of fluid, living and dead white blood cells, dead tissue, and bacteria or other foreign substances.
Abscesses can form in almost any part of the body. The skin, under the skin, and the teeth are the most common sites. Abscesses may be caused by bacteria, parasites, and foreign substances.
Abscesses in the skin are easy to see. They are red, raised, and painful. Abscesses in other areas of the body may not be obvious, but they may cause significant organ damage.
Some specific type of abscesses are:
Abdominal abscess
Amebic liver abscess

Anorectal abscess

Bartholin's abscess

Brain abscess

Epidural abscess

Peritonsillar abscess

Pyogenic liver abscess

Skin abscess

Spinal cord abscess

Subcutaneous abscess

Tooth abscess

Signs and tests
Often, a sample of fluid will be taken from the abscess and tested to see what organism is causing the problem.
Treatment
Treatment varies, but often surgery, antibiotics, or both are needed.
Calling your health care provider
Call your health care provider if you think that you may have any type of abscess.
Prevention
Prevention of abscesses depends on where they develop. For example, good hygiene can help prevent skin abscesses. Dental hygiene and routine care will prevent tooth abscesses.
References
Bolognia J. Infections, hyper- and hypopigmentation, regional dermatology, and distinctive lesions in black skin. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier;2007:chap 467.
Review Date: 8/14/2010.
Reviewed by: David C. Dugdale III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.