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Abscess

By , About.com Guide

Updated May 16, 2012

About.com Health's Disease and Condition content is reviewed by the Medical Review Board

Definition: A collection of pus in the body that is surrounded by inflamed tissue.

An abscess begins with an infection of body tissue that may be caused by bacteria, parasites, or a foreign material (such as a splinter). The body uses white blood cells to fight the infection. Pus, which is composed of dead white blood cells, dead tissue, and bacteria, accumulates at the site.

A skin abscess can be seen, and is inflamed, red, and painful. An abscess inside the body may be more serious and difficult to find.

Pronunciation: ab′ses

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