[header] How to care for a child with diarrhea [title] Check for symptoms of viral infection. [step] There are many causes for diarrhea in children, but the main cause is often a viral infection, such as rotavirus. Viral infections are often accompanied by many other symptoms including headache, stomachache, vomiting, and fever. 
[substeps] Diarrhea, especially caused by viral infection, often lasts between five and fourteen days. Check your child's temperature with a medical thermometer to see if they have a raised body temperature, which is often another sign of viral infection.