Paradoxical diarrhea, or overflow diarrhea, is when you have constipation and diarrhea at the same time. It happens when watery stool leaks around a fecal impaction (hardened piece of stool stuck in ...

Qin Rao, MD, is a board-certified physician based in New York City. He currently works as a gastroenterologist and hepatologist at Manhattan Gastroenterology. Grey poop can be caused by liver issues ...