Gastroenteritis is the inflammation of the stomach and the small and large intestines.<unk>  is an infection caused by a variety of viruses that results in vomiting or diarrhea. It is often called the "stomach flu," although it is not caused by the influenza viruses.
Viral gastroenteritis
Eosinophilic gastroenteritis
Infectious diarrhea
Hemorrhagic gastroenteritis
Campylobacteriosis
Traveler's diarrhea
Chronic colestites
Norovirus infection