Which diseases can be linked with black stool?

When blood travels through the stomach and small intestine, digestion can make it appear black and tar-like. Gastritis may inflame the stomach lining, while a Peptic Ulcer can create a deeper break that bleeds. Helicobacter Pylori Infection is one possible cause of stomach inflammation or ulcer disease. These conditions can present with black stool, but a black stool does not prove that any one of them is present.

Non-disease explanations include iron supplements, bismuth medicines, and dark foods. The clinician will consider stool texture, recurrence, stomach symptoms, medication use, and signs of blood loss rather than relying on colour alone.

Write down when the colour started, what it looked and smelled like, and any new medicines or supplements. Arrange medical advice if the change is unexplained, repeated, or tarry. Assessment may include vital signs, an abdominal examination, blood tests, and sometimes a test for blood in stool or a camera examination of the upper digestive tract. Do not self-treat a possible ulcer.

Attend urgent care for black tarry bowel movements with faintness, severe weakness, breathlessness, confusion, a fast heartbeat, or cold clammy skin. Vomiting blood or coffee-ground material, severe abdominal pain, or signs of collapse also require emergency help. People using blood thinners should seek advice promptly because bleeding may become more serious.

Which causes fit my symptoms and medicines? Could I need testing for Helicobacter Pylori Infection? Should an ulcer or gastritis be checked? Is my blood count affected? Which warning signs should send me to emergency care?