The Causes of Vomiting Blood And Black Stools

If one is vomiting blood or experiences that his/her stools are a black, then this could mean that one has upper Gastro-intestinal tract bleeding.

If the bleeding is fast then this could present as vomiting of blood and if the bleeding is slow then it presents as dark colored stools. Black stools appear if there has been about 50-100 ml of bleeding in the upper gut and the black color comes from the change in color of the blood because of the stomach acid.

However if the blood stays in the stomach, then it becomes partially digested and appears brown in the vomit, this is called coffee ground vomiting.

Common Causes of Upper GIT Bleeding

  • Chronic Duodenal ulcer (peptic ulcer)
  • Chronic Gastric ulcer
  • Gastritis
  • Mallory Weiss Tear
  • Esophagitis
  • Duodenal erosions
  • Stomach cancer

Signs and symptoms

Other than vomiting blood and dark stools there will be:

  • Weakness
  • Nausea
  • Sweating
  • Restlessness
  • Low blood pressure
  • Fast pulse rate
  • Low urine output


Some investigations and tests by your healthcare provider should be done to rule out any serious diseases. The cause of the disease should be treated for along with blood restoration if one has lost significant amounts of blood.


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