Gastroenteritis, also known as gastro flu, is caused by inflammation in the gastrointestinal tract which leads to a cold. This condition presents both gastrointestinal and cold symptoms, including nausea, abdominal pain, diarrhea, fever, runny nose, and general weakness. The primary treatments involve using cold medications and antibiotics. Recovery usually occurs gradually over about a week. During the treatment period, it is crucial to follow a light diet, ensure proper nutrition, get plenty of rest, and drink additional water to stay hydrated.