Anal abscess; Rectal abscess; Abscess - anorectal
An anorectal abscess is a collection of pus in area of the anus and rectum.
Common causes include:
Deep rectal abscesses may be caused by intestinal disorders such as Crohn's disease or diverticulitis.
The following factors increase your risk for an anorectal abscess:
The condition may occur in infants and toddlers who are still in diapers and who have a history of anal fissures.