An anal fissure is a tear in the lining of the lower rectum anal canal that causes pain during bowel movements. Anal fissures don't lead to more serious problems. Most anal fissures heal with home treatment after a few days or weeks. These are called short-term acute anal fissures.
Anal fissures are unfortunately a common cause of rectal pain and bleeding. The good news is that properly trained pelvic rehabilitation clinicians are able to help you heal this painful condition and learn how to manage flare-ups when they happen. A rectal fissure, or tear in the lining of the anal canal, is sometimes described like a paper cut. This small yet sensitive tear can first happen when someone passes a large or hardened bowel movement, so constipation is in general associated with fissures. Surgery or injury to the canal can also create a fissure, and once the tear takes place, re-injury to that tissue can happen.
What is an anal fissure? What are the symptoms of an anal fissure? The typical symptoms of an anal fissure are extreme pain during defecation and red blood streaking the stool. Patients may try to avoid defecation because of the pain.
A fissure most commonly occurs after an episode of constipation, but it can happen after an attack of diarrhea. A fissure begins on the surface and usually heals rapidly on its own. Sometimes fissures may deepen to reach the underlying sphincter muscle the muscle around the anal canal. It is not completely understood why some fissures heal and others do not.