Font Size
A
A
A
1
...

Anal Abscess

Anal Abscess Overview

A perirectal abscess is a collection of pus in the deep tissues surrounding the anus. By contrast, a perianal abscess is a shallower collection of pus under the skin surrounding the anus; however, both are sometimes described as an anal abscess. Both types of abscesses need immediate medical attention; however, a perirectal abscess usually is the more severe infection. A delay in treatment may cause serious worsening of the condition and unnecessary complications.

Anal Abscess Causes

Perirectal and perianal abscesses are thought to develop from the glands surrounding the anus; on occasion, perianal abscesses may develop from infected skin adjacent to the anus. Glands may plug up, usually leading to bacterial infection. When the glands fill with pus, they may burst inward, releasing their infected contents into the spaces around the rectum and anus. This pus causes an abscess, or pus collection, in the spaces surrounding the rectum or anus. The anal abscess may enlarge, causing pain, fever, and difficulty with bowel movements.

Certain people are more likely to develop perirectal and perianal abscesses, including those with the following medical conditions:

Medically Reviewed by a Doctor on 5/23/2014

Must Read Articles Related to Anal Abscess

Abdominal Pain (Adults)
Abdominal Pain in Adults Abdominal pain in adults can range from a mild stomach ache to severe pain. Examples of causes of abdominal pain in adults include appendicitis, gallbladder dis...learn more >>
Crohn's Disease
Crohn Disease Crohn's disease (Crohn disease) is an inflammatory bowel disease (IBD), and is a chronic long-term inflammation of the digestive tract. The cause of Crohn's dis...learn more >>
Fever (in Adults)
Fever in Adults A fever is a body temperature of 100.4 F or greater. A fever may be caused by a virus, bacteria, fungus, blood clot, tumor, drug, or the environment. Treatment ...learn more >>



Read What Your Physician is Reading on Medscape

Perianal Abscess »

A perianal abscess represents an infection of the soft tissues surrounding the anal canal, with formation of a discrete abscess cavity.

Read More on Medscape Reference »


Medical Dictionary