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.

Every year, nearly 500,000 children die from an easily curable condition: diarrhea. There's a simple and effective treatment: mixing oral rehydration salts — which are basically a mix of sugar and ...