An anal fissure is a common condition where there is a painful tear in the lining of the anus, the backside opening where feces is excreted. It is often described as feeling like passing broken glass. Typical anal fissure symptoms are a sensation of tearing, ripping or burning and usually a small amount of bright red bleeding during and after a bowel movement. While the condition can be very painful, it is not usually serious.

This material must not be used for commercial purposes, or in any hospital or medical facility. Failure to comply may result in legal action. Medically reviewed by Drugs. Last updated on Feb 3, An anal fissure is a cut or tear in the tissue inside your anus.

The anus is that part of the intestinal tract that passes through the muscular canal of the pelvis and anal sphincters. It is the final orifice through which stool passes out of the body. In adults, the anus is 4 to 5 centimeters long. The lower half of the anal canal has sensitive nerve endings.