The Scoop On Cat Poop Cat World Don't Ignore If Your Stool Color Changes Suddenly Comment POOP and I'll send you the stool guide I use with my patients. Trust your gut. Follow @doctor.sethi for no BS gut science Melena (Black Stool): Symptoms, Causes, and Treatment Medanta Why Black Dark Brown Tarry Stool Appears After Wearing Hair Nets And How This One Product What Does Tarry Stool Look Like? Alarming Guide Liv Hospital MALENA: Melena is the medical term for black, tarry stools caused by the presence of digested blood. It typically indicates bleeding in the upper gastrointestinal (GI) tract, such as the: Stomach Duodenum