An anal fissure is a small tear in the lining of the anal canal. This type of tear may develop in adults from passing hard or large stools during bowel movements. Anal fissure is also common in infants between 6 and 24 months. Anal fissures are less likely to develop in older children.

An anal fissure may cause you to experience pain and bleeding. More than 90 percent heal without surgery, and you can use topical creams or suppositories to provide relief as they heal. Anal fissures that fail to heal may become chronic and cause considerable discomfort.

If you develop an anal fissure that doesn't heal, surgery may relieve your discomfort.