There are many reasons why half of the stool is dark in color, the common ones are physiological factors (such as eating spinach, etc.), gastrointestinal bleeding, gastric ulcers and so on. 1. Physiological factors: Eating dark-colored food such as spinach, mulberries, etc. or blood products such as pig’s blood, duck’s blood, etc. can cause half of the stool to be dark in color. Some medicines such as ferrous succinate, bismuth potassium citrate, etc. will also appear after taking this situation, which is a normal phenomenon. 2. Gastric ulcers: ulcers occur in the mucous membrane of the inner wall of the stomach or in the deeper layers, which can cause gastric bleeding, etc. The color of stools may also be dark or tarry black. 3. Anaphylactic purpura: when the lesion violates the capillaries of the mucosa of the digestive tract, gastrointestinal symptoms such as nausea and vomiting may occur, and in severe cases, gastrointestinal bleeding may occur, and half of the stools may be dark in color or black in color. It is recommended to go to the hospital as soon as possible, under the guidance of professional physicians to clarify the cause of the disease, and standardized treatment.
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