Abscess

A localized collection of pus within tissue caused by an infection or other inflammatory process.

Pus typically contains immune cells, microorganisms, dead cells, and tissue debris. An abscess forms when the body’s response to infection creates a confined area of inflammation and tissue destruction. Abscesses can occur in the skin and soft tissues or deeper inside the body. Some require drainage in addition to treatment of the underlying infection.

QUICK FACT

An abscess is more than simply a collection of bacteria; it is a localized inflammatory collection containing pus.

COMMONLY CONFUSED WITH

Cellulitis: a diffuse infection and inflammation of skin and soft tissue without a defined collection of pus.

SEE ALSO