It is basically a cut or tearing in the anus part of the body that comes out upwards into the anal canal. Fissures are common situations of the anus and anal canal and are responsible for 6% to 15% of the visits to a colon and rectal (colorectal) surgeon. It can be found in Men, Women,Young and Old ones. Fissures is the most painful situation in the bowel movement that often is severe. Anal fissure is the most common cause of rectal bleeding.

Anal Fissures occurs in the specialized tissue that covers that lines the anus and anal canal which is called anoderm. A line just inside the anus the skin of the inner buttocks changes to anoderm. Less likely to skin, anoderm has no hairs, sweat glands, or sebaceous (oil) glands. It contains a large number of sensory nerves that can feel the light touch and pain. The hairless, gland-less, extremely sensitive anoderm surrounds the entire length of the anal canal until it meets the demarcating line of the rectum,called the denate line.

An anal fissures is a small tear in the thin, moist tissue (mucosa) that covers the anus. Anal fissure may occurs when you pass hard or large stools during a bowel movement. It usually causes pain and bleeding with the bowel movement. You may also some contraction in the ring of the muscle at the end of your anus.