Diarrhea is the condition of having three or more loose or liquid bowel movements per day. This happens due to increase in the motility of the bowel in the intestines & decrease in the capacity of colon to absorb water. Mainly Rotavirus infection is the major cause of this disease in children & Norovirus is the main cause for adults. Main symptom is the frequent watery stools & resultant fatigue & lethargy.
