An anal fissure is a tear in the lining of the anus, causing pain and some bleeding during and after bowel movements. Anal fissures are caused by injury or trauma to the anal canal.
Most anal fissures aren’t serious, and will heal on its own in four to six weeks. Some home remedies that may relieve uncomfortable symptoms include over-the-counter stool softeners, drinking more fluids, fiber supplements or fibrous foods, and applying topical pain relievers to the anal fissure. If your anal fissure doesn’t improve with conservative treatment or lasts longer than eight weeks, your doctor may look for underlying disorders that can cause anal fissures, and surgery may be considered to repair the tear.