Gastroenteritis is a catchall term for infection or irritation of the digestive tract, particularly the stomach and intestine. It is frequently referred to as the stomach or intestinal flu, although the influenza virus is not associated with this illness. Major symptoms include nausea and vomiting, diarrhea, and abdominal cramps. These symptoms are sometimes also accompanied by fever and overall weakness. Gastroenteritis typically lasts about three days. Adults usually recover without problem, but children, the elderly, and anyone with an underlying disease are more vulnerable to complications such as dehydration.