Diverticulitis can cause irregular stools, alternating between diarrhea and constipation, along with unusually strong-smelling and/or bright red, maroon, or tarry stools. Diverticulitis is caused ...

Red poop that happens as a result of lower gastrointestinal (GI) tract bleeding is usually bright red, while upper GI tract bleeding (like from your stomach) might appear more maroon-colored.

Black stool can be an indicator of bleeding in the higher digestive tract. Similarly, red or maroon stool could mean lower digestive tract bleeding, caused by inflammatory bowel disease ...