An anal fissure is a small tear in the lining of the anal canal. It commonly occurs due to passing hard or large stools, chronic constipation, or repeated episodes of diarrhea. In most cases, an anal fissure is a painful but temporary condition that heals within a few weeks with proper care and lifestyle adjustments.
However, in some cases, the fissure fails to heal completely and may develop into a chronic condition. When this happens, symptoms can persist or recur over time, especially if the underlying cause is not addressed.