If patients have dizziness, nausea, and diarrhea at the same time, the symptoms may be caused by gastrointestinal flu, acute gastroenteritis, food poisoning, and other diseases. If symptoms of dizziness, nausea and diarrhea occur, you should seek medical attention in a timely manner to clarify the cause of the disease for early treatment. Common causes 1, gastrointestinal colds: usually caused by viral infections, mostly in children, can be treated with oral montelukast medication as prescribed by the doctor. If the diarrhea is serious or accompanied by fever, you should go to the hospital in time to rehydrate under the guidance of a professional doctor to prevent dehydration, electrolyte disorders and other conditions. At the same time, patients should be allowed to rest well, and starvation therapy can be used appropriately to reduce the burden on the stomach and intestines. Give patients more water, preferably more salt and sugar water; 2. Acute gastroenteritis: manifested as nausea, vomiting, diarrhea, dizziness and other uncomfortable symptoms, mostly caused by overeating or unclean diet. It can be relieved by resting, and can be treated with metoclopramide tablets to stop vomiting, montelukast to stop leaking, and intravenous glucose saline and other related electrolytes for serious cases; 3. Food poisoning: patients with food poisoning will have nausea, vomiting, abdominal pain, dizziness and other symptoms. Treatment. Attention in daily life should pay attention to dietary rules, pay attention to dietary hygiene, avoid eating unclean food, eat less cold and stimulating food, drink more water, and do physical exercise properly.