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Melena is a form of blood in stool which refers to the dark black, tarry feces that are commonly associated with upper gastrointestinal bleeding. [1] The black color and characteristic strong odor are caused by hemoglobin in the blood being altered by digestive enzymes and intestinal bacteria. [2]
This is a list of drugs and substances that are known or suspected to cause Stevens–Johnson syndrome This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources .
It can cause a black tongue and black stools in some users of the drug when it combines with trace amounts of sulfur in saliva and the colon to form bismuth sulfide. [7] Bismuth sulfide is a highly insoluble black salt, and the discoloration seen is temporary and harmless. Long-term use (more than six weeks) may lead to accumulation and ...
(Find out the 9 most common reasons why your poop is black.) ... As noted by Dr. O’Connor, certain drugs and supplements can cause the stool to appear pale or clay-like.
If your stools are regularly much thinner than before, this may suggest a tumor in the colon, Inra said. Watch for other changes in your bowel habits, like constipation. 5.
Other names: Upper gastrointestinal hemorrhage, gastrorrhagia: Endoscopic image of a posterior wall duodenal ulcer with a clean base, which is a common cause of upper gastrointestinal hemorrhage. Specialty: Gastroenterology: Symptoms: Hematemesis (vomiting blood), coffee ground vomiting, melena, hematochezia (maroon-coloured stool) in severe cases
Digested blood from the upper gastrointestinal tract may appear black rather than red, resulting in "coffee ground" vomit or melena. [2] Other signs and symptoms include feeling tired, dizziness, and pale skin color. [18] A number of foods and medications can turn the stool either red or black in the absence of bleeding. [2]
Weight loss medications that are known as “lipase inhibitors” can cause steatorrhea, says Dr. Shanker-Patel. Examples of these medications include Xenical and Alli (the generic name of these ...