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A 22-year-old female asked:

Black and green loose stools. there has been no change in diet or medications. what could cause this? had mild fever and general abdomen pains

1 doctor answer1 doctor weighed in
Dr. Charles Cattano
Gastroenterology 40 years experience
Melenic stool?: Dark-colored stools may result from iron supplements, foods you eat (like a lot of spinach), substances (like peptobismol), but most significantly suggests bleeding. When blood is denatured by acid in your stomach, as from ulcers, stools will turn tarry ("melena"). Blood may also be ingested from nose bleeds, bleeding gums... Persistent melena (without obvious cause) & symptoms warrants md visit.
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Last updated Dec 10, 2013

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