Acute gastroenteritis is quite severe, as it can cause significant vomiting and diarrhea. Severe diarrhea can lead to symptoms of dehydration. Additionally, acute gastroenteritis can lead to decreased appetite, weight loss, and lethargy, affecting normal life and work. For acute gastroenteritis, treatment primarily involves medication, mainly antibiotics and antidiarrheal drugs. During treatment, it is recommended to eat smaller, more frequent meals. For severe diarrhea, it is advisable to refrain from eating and rely mainly on intravenous fluids for nutrition. Moreover, meals should be regular and controlled in quantity, avoiding overly spicy or greasy foods. (Medication should be used under the guidance of a doctor.)