These include complications like ... stools, and bright red, maroon, or tarry stools. The stools may also be foul-smelling. Diverticulitis can be diagnosed with an abdominal CT scan and blood ...

If you’ve taken bismuth medication like Pepto Bismol, that can also make your stools look almost black. It’s always best to check with a doctor if you’re unsure. If you find blood in your ...