An anal fissure is a small tear in the tissue that lines the anus. It can occur when you pass hard or large stools. Anal fissures typically cause pain, sometimes severe, and bleeding with bowel movements. An anal fissure usually heals on its own. If it doesn't, medical treatment or surgery can relieve discomfort.
Mayo Clinic in Rochester, Minn., ranks No. 1 for digestive disorders in the U.S. News & World Report Best Hospitals rankings. Mayo Clinic in Scottsdale, Ariz., and Mayo Clinic in Jacksonville, Fla., are ranked high performing for digestive disorders by U.S. News & World Report.
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