Symptom of anal bleeding injury to any of the gastrointestinal organs can result in internal symptom of anal bleeding that passes through the rectum. Fissures often improve by themselves, but if they don't, an ointment or medication applied locally to relax the muscle can relieve the pain. Less common rectal bleeding causes include blood-clotting disorders and allergic reactions to certain food types. Intestinal polyps are masses of tissue that protrude from the bowel wall, sometimes causing minor bleeding. We partner with some of the companies that sell these products, which means Healthline UK and our partners may receive a portion of revenues if you make a purchase using a link s above. Sclerotherapy: the injection of a chemical solution around the blood vessel shrinks the hemorrhoid.