Gastroenteritis is inflammation of the stomach and intestines, which leads to diarrhea and vomiting. Gastroenteritis is most often due to a bacterial or viral infection. Gastroenteritis that results from a virus is called viral gastroenteritis. Many different viruses cause gastroenteritis, including some rotaviruses, noroviruses, and adenoviruses. Viral gastroenteritis is contagious. Bacterial gastroenteritis is often caused by infection with E. coli and salmonella. Other causes of gastroenteritis include parasite infection, exposure to harmful chemicals in seafood or water, use of certain medications, and irritation from particular foods. Follow the links below to find WebMD's comprehensive coverage about how gastroenteritis develops, what the symptoms are, how to treat it, and much more.
Nausea and Vomiting - Common Causes
WebMD explains the causes of nausea and vomiting -- and when to call the doctor.
Abdominal Pain: What You Should Know
What's causing your stomach ache? WebMD looks at some of the causes of abdominal pain.
Learn more from WebMD about the causes, complications, and treatment of diarrhea.
X-Ray Exams of the Digestive Tract
WebMD explains X-ray tests for digestive problems, including upper and lower GI exams.
Everything You Need to Know About Vomiting
We all vomit. But why does it happen? When should I see a doctor? How can I stay comfortable? We’ve got your answers.
Stomach Flu in Kids & Todlers: What To Expect
Stomach flu isn’t really a ‘flu.’ It’s gastroenteritis and can be caused by bacteria, a virus, or a parasite. Learn more about what to expect when your child or todler has the stomach flu.