Does chronic enteritis present with black stools? Generally black stools do not occur in chronic enteritis. Because we are referring to chronic enteritis, generally refers to the lower gastrointestinal tract diseases, such as diseases of the small intestine, such as acute hemorrhagic necrotizing enterocolitis, small intestinal ulcers; and colonic diseases, such as bacillary dysentery, amoebic dysentery, ulcerative colitis, etc.; and rectal-anal diseases, such as rectal-anal tube injuries, and so on. The duodenum is also part of the small intestine, but the duodenum refers to the upper gastrointestinal tract, if the duodenal ulcer bleeding can appear black stools, but the main manifestation is mainly to vomit blood, and some diseases of the lower gastrointestinal tract, it is often not mainly to vomit blood to the blood. Lower gastrointestinal bleeding and blood in the stool, often can be manifested as acute hemorrhage can also appear chronic small amount of bleeding or intermittent bleeding, so he belongs to the lower gastrointestinal blood in the stool. The color of the blood in the stool varies according to the location of the bleeding, the amount of bleeding and the length of time the blood stays in the intestinal cavity. If the bleeding is heavy and fast, it appears bright red, and if the bleeding is light and slow, and the blood stays in the intestinal lumen for a longer period of time, then it appears dark red. Blood can be mixed with the feces, or it can be attached to the surface of the feces, or it can drip from the stool after a bowel movement (anal dribbling). In gastrointestinal bleeding, if the amount of bleeding is 5-10mL, it can not be seen by the naked eye and need to do an occult blood test in order to find out, if the occult blood test is positive, then this situation is called occult blood stool.