Acute gastroenteritis is a disease state that occurs when food or water that is contaminated with pathogenic microorganisms.Symptoms are nausea, vomiting, diarrhea, and abdominal pain.Watch this video to learn about it. 0:20 Scenario 0:49 What is acute gastroenteritis? 1:50 Signs 2:44 Complication 3:10 Clinical presentation 3:24 Etiology 3:56 Red Flags 4:36 Differential Diagnosis 5:56 Classification of Dehydration