An anal fissure is a common condition where there is a painful tear in the lining of the anus, the backside opening where feces is excreted. It is often described as feeling like passing broken glass. Typical anal fissure symptoms are a sensation of tearing, ripping or burning and usually a small amount of bright red bleeding during and after a bowel movement. While the condition can be very painful, it is not usually serious. It is estimated that about one in 10 people may have an anal fissure in their lifetime, though it is not possible to establish a precise figure, because some people may be too embarrassed to discuss the condition with their healthcare provider, and it is often misattributed to hemorrhoids. Anal fissure treatment generally involves softening the stool, avoiding constipation where possible and practicing good hygiene.