An anal fissure is a small tear in the thin, moist tissue (mucosa) that lines the anus. An anal fissure may occur when you pass hard or large stools during a bowel movement. Anal fissures typically ...

A bowel movement can be an effective way to gauge whether you're in good health. The foods you eat, the amount of exercise you get, and how much water you drink affect your digestive system and poop.

The management of chronic anal fissure has received renewed interest and has been re-evaluated over the past 20 years. The use of botulinum toxin seems to be a promising and safe approach, ...