If you have ulcerative colitis, you might see blood and mucus in your poop when you have a flare-up. It shows up most often in very loose, watery stools. This bloody diarrhea tends to happen with ...

Osmotic diarrhea is when undigested material reduces how much water and electrolytes the bowels can absorb. It can occur when a person’s body has difficulty digesting certain foods, such as lactose.

A 50-year-old woman presents with watery diarrhea. She gives a history of ileal bypass for morbid obesity. She has been having 10-15 watery stools each day. The intern gave her narcotics to decrease ...