Guide To Gastritis Symptoms

Tar-Like Stool

Many of the underlying causes of gastritis can cause patients to experience damage to the blood vessels that supply the lining of the stomach with oxygenated blood. Some of these causes include excessive stomach acid production, drinking too much alcohol, long term use of nonsteroidal anti-inflammatory drugs, and autoimmune disorders. When blood leaks from the damaged blood vessels in the lining of an individual's stomach, it will continue to move through the digestive tract if it is not excreted through vomiting. As blood from the stomach moves through the small and large intestine, it starts to clot due to the amount of time it has been outside of the bloodstream. This clotted blood combines with stool and is then excreted from the individual's body. The partially clotted blood in the stool can cause it to have a black or dark brown tar-like appearance.

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