Anal fissures are cracks or tears in the skin around your anus. The crack in the skin exposes the muscle underneath, causing burning and sharp pain when you have a bowel movement. The pain can last for hours after the bowel movement and can be severe. These cracks are usually caused by the passage of a hard stool but also can be caused by persistent diarrhea. Some people get fissures once in awhile and others can become chronic, lasting for years. The pain of a fissure may cause people to avoid having a bowel movement leading to chronic constipation.
Anal Fissures | Patient Education | UCSF Health
An anal fissure is a tear in the lining of the anus or anal canal the opening through which stool passes out of the body. The fissure can be painful and may bleed. Anal fissures can occur in anyone at any age. The chance of having an anal fissure decreases as people get older. People who have had fissures in the past are more likely to have them in the future. Anal fissures can be caused by trauma to the anus and anal canal. The trauma can be caused by one or more of the following:.
See the latest Coronavirus Information including testing sites, visitation restrictions, appointments and scheduling, and more. An anal fissure is a small split or tear in the thin moist tissue mucosa lining the lower rectum anus. In adults, fissures may be caused by passing large, hard stools, or having diarrhea for a long time.
If you buy something through a link on this page, we may earn a small commission. How this works. An anal fissure is an anal tear or crack, in the lining of the anal canal, a cut or tear in the anus that extends into the anal canal. Most anal fissures are less than one centimeter across, but the anus is a highly sensitive part of the body. As a result, a pain in this region can be quite severe, even with a small tear.