Two days without stool its stool may become black, consider may be physiological black, there may be digestive bleeding, chronic enteritis and other pathological black stool.
1. Physiological phenomenon: two days without bowel movement may lead to the absorption of water in the stool, the color of the stool changes, and the phenomenon of black stools, most of which is a state of dry stools.
2. Pathological phenomena:
(1) Gastrointestinal bleeding: when there are peptic ulcers, gastroesophageal variceal bleeding, due to the absence of stool for two days, resulting in the stool in the gastrointestinal memory for a long time, which will stimulate the gastrointestinal tract of the ulcer surface bleeding, or even variceal rupture bleeding, caused by bleeding of the gastrointestinal tract, which will cause the stools to turn black.
(2) chronic enteritis: if there is chronic enteritis, stool repeatedly stimulate the intestinal mucosa, so that the mucosal congestion and edema aggravated by bleeding, and stools for two days unresolved for a long time to stay in the intestinal tract will lead to the phenomenon of black stools.
Dark stools can also be caused by other reasons, it is recommended to go to the hospital as soon as possible, under the guidance of the doctor to clarify the causes and give targeted treatment.