Black stools may be a sign of gastric bleeding.
Black stools can be considered tarry stools, a change in stool color caused by a break in the gastric mucosa due to some gastric disorder and neutralization of blood and gastric acid. If the patient is accompanied by significant stomach discomfort, consider the possibility of upper gastrointestinal bleeding. The more common diseases, such as esophageal cancer, gastric cancer, acute erosive gastritis, duodenal ulcer, gastric ulcer and other diseases. The diagnosis needs to be confirmed by promptly going to a regular hospital gastroenterology department for stool routine, gastroscopy, etc.
Patients with black stools that are recent and not accompanied by other manifestations may be side effects of medications or related to diet. Patients with anemia who are taking iron supplements or patients with gastric disease who are taking gastric mucosal repair agents may have black stool manifestations as a side effect of the medication. Black stools can also be caused by the consumption of black foods, such as black sesame, eggplant or blood products. So be careful to differentiate the causes of black stools and avoid overstimulation.