What is Diarrhea?Diarrhea means loose or watery stools. It's so common that most people shudder at the word. The thought of liquid, foul-looking stools in the toilet is always unpleasant. If you suffer from diarrhea, not knowing what's causing it or how long it will last only increases the stress of this unpleasant feeling. The good news is that diarrhea is usually mild (just a few trips to the...