Introduction

An anal fissure is a small cut or crack in the anal canal lining (anoderm), which is a very pain-sensitive part. This is known to cause severe pain and bleeding during and after bowel movements. This happens when hard or bulky stools are passed. Rarely frequent passage of stool also may be the cause. An anal fissure can affect any age group. This is also commonly seen in pregnant females. Torn out skin bulges near the anal verge and mimic like piles. This is called a sentinel pile. The severe spasm of the internal sphincter muscle is the main reason for pain. The posterior midline of the anal canal is the most common site affected.