How is shit pulling out a lot of blood to return a responsibility

If a lot of blood is pulled out during defecation, the color is bright red, usually considered to be related to hemorrhoids, which may be due to the patient's stool is relatively dry or too hard to defecate, resulting in capillary rupture in the hemorrhoidal vein mass, causing bleeding. In addition, this situation may also be related to intestinal polyps, hemorrhoids prolapse, anal fissure and other diseases. If the stool also contains pus, it should also be considered related to rectal cancer, colon cancer, ulcerative colitis and other diseases. In addition, when upper gastrointestinal bleeding occurs, there may also be cases of hematochezia.