Acute gastroenteritis typically presents with symptoms such as abdominal pain, diarrhea, and vomiting, and sometimes accompanied by fever and chills. In such cases, it is important to rest, keep warm, avoid cold, and follow a diet that is light and easy to digest, such as rice porridge, soft noodles, etc. It is advisable to avoid raw, greasy, spicy, and alcoholic foods. Treatment should be based on the specific cause. For viral infections causing gastroenteric flu, antiviral and antidiarrheal astringents are commonly used. For bacterial infections causing infectious diarrhea, antibacterial and antidiarrheal treatments are needed, typically involving cephalosporins or quinolones. Generally, symptoms will gradually ease.