Inflammation of any segment of the gastrointestinal tract from esophagus to rectum; causes of gastroenteritis are many including genetic, infection, hypersensitivity, drug effects, and cancer.

Gastroenteritis, also known as infectious diarrhea, is an inflammation of the gastrointestinal tract including the stomach and intestine. Symptoms may include diarrhea, vomiting, and abdominal pain...