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Perianal abscesses are the most common type of anorectal abscesses . These abscesses can cause significant discomfort for patients. They are located at the anal verge and, if left untreated, can extend into the ischioanal space or intersphincteric space since these areas are continuous with the perianal space. They can also cause systemic infection if left untreated.[1][2] Anorectal abscess (also known as an anal/ rectal abscess or perianal /perirectal abscess ) is an abscess adjacent to the anus. [1] Most cases of perianal abscesses are sporadic, though there are certain situations which elevate the risk for developing the disease, such as diabetes mellitus, Crohn's disease, chronic corticosteroid treatment and others. It arises as a complication of paraproctitis. Ischiorectal, inter- and intrasphincteric abscesses have been described. [citation needed] An anorectal abscess is a localized collection of pus in the perirectal spaces. Abscesses usually originate in an anal crypt. Symptoms are pain and swelling. Diagnosis is primarily by examination and CT or pelvic MRI for deeper abscesses . Treatment is surgical drainage. An anal abscess is a pus-filled lesion that forms in or near your anus, rectum, or the area between your genitals and anus. Learn about the types, causes, symptoms, diagnosis, and treatment of anal abscesses, and how they differ from hemorrhoids and fistulas.
