An anal fissure is a tear in the skin of the anus. This tear can cause severe pain on opening the bowels — pain which can last for some time after the bowel movement. It may be associated with a little bright blood from the bottom, and is often associated with some skin heaped up around the fissure from the tear — called a sentinel tag. What causes anal fissures?

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Repair of Anal Fissure



Anal Fissure - Causes, Symptoms, Treatment | Glasgow Colorectal Centre
Unfortunately, Internet Explorer is an outdated browser and we do not currently support it. To have the best browsing experience, please upgrade to Google Chrome. An anal fissure is a common and painful problem caused by a small tear or ulcer open sore in the lining of the anus back passage , just at the opening to the outside. This can cause bleeding, itching and pain with bowel movements, which can sometimes be severe. Anal fissures usually heal within a few weeks, but those that have not healed within weeks are called chronic fissures. There are various causes, such as constipation, passing hard stools, diarrhoea, childbirth, or it can develop alongside other conditions.


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Your doctor will likely ask about your medical history and perform a physical exam, including a gentle inspection of the anal region. Often the tear is visible. Usually this exam is all that's needed to diagnose an anal fissure.



Sphincterotomy, also called a lateral internal sphincterotomy, is a type of procedure that is used to cut the anal sphincter. The anal sphincter is the group of muscles connected to the rectum, at the end of the digestive tract, through which bowel movements are passed. Fissures can bleed and be painful, and in some cases they may take time to heal.