A headache is a pain in any area of the head. Headaches are more common in teens or older children. Young children may have them too.
Most headaches are not a sign of a more serious illness.
Viral gastroenteritis is often called "stomach flu," but it is not caused by flu (influenza) viruses. Viral gastroenteritis can be caused by many different viruses, including Rotaviruses, Torovirus, Adenoviruses, Caliciviruses, Astroviruses, and a group of Norwalk-like viruses. Audio available.