NCIt definition : An inflammatory disorder that affects the upper and lower gastrointestinal tract.
Most commonly, this is attributed to viruses; however bacteria, parasites or adverse
reactions can also be the culprit. Symptoms include acute diarrhea and vomiting.;
Alternative definition : NICHD: Inflammation of the stomach and small intestine.; NCI-GLOSS: Inflammation of the lining of the stomach and the intestines. Symptoms
may include nausea, vomiting, diarrhea, and abdominal cramps (dull or sharp pains).
Gastroenteritis may be caused by infection with bacteria, parasites, or viruses. It
may also be caused by food poisoning, allergic reactions, or reactions to certain
medicines or foods.;