Medically reviewed by Jay N. Yepuri, MD If you have green poop, it may be a sign of an infection, medication side effect, or ...
A sudden change to black, tar‑like stool, known as Melena, may signal bleeding somewhere in the upper digestive tract. While ...
Sudden black, tar-like stools, medically termed melena, often signal internal bleeding in the stomach or upper intestine, ...