good healthchecks near me Acute gastroenteritis is a short-term inflammation of the stomach and intestines caused by viruses, bacteria, or other microorganisms, resulting in symptoms like nausea, vomiting, diarrhea, and abdominal pain. Treatment typically involves staying hydrated by drinking plenty of fluids, resting, and consuming clear liquids or saltine crackers. For more severe cases or bacterial infections, a doctor may recommend medication or antibiotics.