Viruses usually cause diarrhea in children.
This is why most children with diarrhea get better on their own, without any specific medications or antibiotics. Typically with diarrhea, a child may have associated vomiting, as well as a low-grade fever. In most cases the illness lasts for three to six days. Often, there is a history of contact with a person who has had similar symptoms. The main concern when dealing with diarrhea is to prevent dehydration.