Learn about our expanded patient care options and visitor guidelines. Most anal fistulas form in reaction to an anal gland that has developed a pus-filled infection abscess. Even if your abscess drains on its own, you have about the same risk for a fistula. Certain conditions that affect your lower digestive tract or anal area may also increase your risk. These include:.
Anal fistula is a chronic abnormal communication between the epithelialised surface of the anal canal and usually the perianal skin. They can form when anal abscesses do not heal properly. Anal fistulae originate from the anal glands , which are located between the internal and external anal sphincter and drain into the anal canal. The tract formed by this process is a fistula.
Last updated: May 18, Revisions: The majority are associated with anorectal abscess formation, with one third of patients with an anorectal abscess having an associated perianal fistula at the time of presentation. Anal fistulae usually present with either 1 recurrent perianal abcesses 2 intermittent or continuous discharge onto the perineum , including mucus, blood, pus, or faeces.
Anal fistula is the medical term for an infected tunnel that develops between the skin and the muscular opening at the end of the digestive tract anus. Most anal fistulas are the result of an infection that starts in an anal gland. This infection results in an abscess that drains spontaneously or is drained surgically through the skin next to the anus. The fistula then forms a tunnel under the skin and connects with the infected gland.