Moderate diarrhea means having more than a few but not more than 10 diarrhea stools in a day. Mild diarrhea means having a few diarrhea stools in a day. Severe diarrhea has many causes. Stomach flu (gastroenteritis) or food poisoning may cause severe diarrhea. Jun 16, · Definition. By Mayo Clinic Staff. Everyone occasionally has diarrhea — loose, watery and more-frequent bowel movements. You might also have abdominal cramps and produce a greater volume of stool. Diarrhea varies in specific symptoms, severity and duration.
Diarrhea usually resolves on its own without treatment. However, it is important to prevent dehydration. Oral rehydration solutions, such as Pedialyte for infants and children and Gatorade for adults, should be used to replenish electrolytes lost through mild to moderate diarrhea.