Acute gastritis 1, clinical features (1) the onset of the disease is rapid, the symptoms are also more serious, but the course of the disease is generally short. (2) Most of the lesions are confined to the mucosal layer. (3) Causes include: bacterial or viral infections, heavy alcohol consumption, overdose of salicylic acid and other drugs, food allergies, etc. (4) The main clinical manifestations of epigastric discomfort or pain, colic, loss of appetite, nausea and vomiting, and even toxic symptoms, such as fever, stomach chills, headache, dehydration, acidosis, muscle cramps and shock, etc. 2. Nutritional treatment (1) Phase I: 1) For obvious or persistent vomiting in the abdomen, fasting, bed rest, with hydration and electrolytes supplemented by intravenous fluids. 2) Eliminate any pathogenic factors to stimulate the gastric mucosa, and pay attention to prevent dehydration and acidosis. 3) For milder cases, clear and liquid food can be used for 1-3 days. 4) Food selection: rice soup, lotus root powder, fruit juice, clear soup, egg soup. 5) Meals: 5-7 meals per day, with each meal amounting to about 200-250 ml, the total amount of liquid food per day is about 1200-1800 ml, in order to avoid increasing the load on the stomach and the stimulation of the gastric mucosa. (2) Second stage: 1) After the acute period, you can choose a light, semi-liquid diet with less residue, and gradually transition to soft food and general food. 2) With enteritis and diarrhea, products that cause flatulence, such as sucrose, milk, soy milk, and related products, should not be used.