When the illness duration is short, acute gastroenteritis should be considered. The main cause of acute gastroenteritis is unsanitary eating habits leading to bacterial infection in the gastrointestinal tract, which causes acute inflammation. Its primary symptoms include nausea, vomiting, abdominal pain, diarrhea, fever, etc. This disease can be definitively diagnosed with a routine blood test at the hospital, where an increase in white blood cells and neutrophils can be observed. What should be done? The treatment involves anti-inflammatory measures, rehydration, and some symptomatic treatments. Generally, recovery can occur within two to three days. During treatment, it is crucial to maintain a light diet that is easy to digest, such as consuming porridge or soup, and avoid greasy, rich foods. Additionally, it is important to pay attention to dietary hygiene in the future.