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Anal Fissure

Basics

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Definition

An anal fissure is a small split or tear in the thin moist tissue (mucosa) lining the lower rectum (anus).

Symptoms

Anal fissures may cause painful bowel movements and bleeding. There may be blood on the outside of the stool or on the toilet tissue (or baby wipes) following a bowel movement.

Other symptoms may include:

  • A crack in the skin that can be seen when the area is stretched slightly (the fissure is almost always in the middle)
  • Constipation
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