What is the problem with pulling out a lot of blood

Pull stool pull out a lot of blood first suspected is internal hemorrhoids, may be due to the stool is relatively thick and dry hard, discharge process of hemorrhoids caused by wear on the surface of the mucous membrane, bleeding symptoms can be gradually stopped after the end of defecation. In addition, if severe stomach bleeding occurs, it may also cause hematochezia, and the blood volume is relatively large, usually accompanied by obvious stomach pain.