Sudden dizziness, dizziness, and sweating, if accompanied by panic, should be considered as a problem of hypoglycemia. If it is relieved after eating calories, it is caused by hypoglycemia. If it is accompanied by chest tightness and panic, it may be a cardiogenic problem and requires prompt consultation with a cardiologist. If dizziness, blurred eyes, sweating, blurred vision, choking and coughing, numbness and weakness of limbs are symptoms of cerebrovascular disease, it is necessary to promptly consult a neurologist for CT and physical examination to avoid aggravation of cerebrovascular disease. Another is dizziness, nausea, vomiting caused by systemic diseases, such as cardiac insufficiency, infection or eye diseases.