Diarrhea claims the lives of 500,000 children each year in low- and middle-income countries. Now, Danish and Ethiopian researchers have linked chronic diarrhea to a specific pattern of gut bacteria, a ...

Diarrhea is a common symptom of various medical conditions. It involves having loose, watery stools three or more times per day. Acute, or short-term, diarrhea usually lasts for a couple of days.

Paradoxical diarrhea happens when loose, watery stool finds a way around hardened, impacted stool in your colon and leaks from your anus. Also called overflow diarrhea, it’s often a symptom of a type ...

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.