Sudden dizziness and sweating may be a kind of hypoglycemia, and the blood sugar should be monitored promptly. If the blood glucose is lowered, it should be corrected in time to prevent hypoglycemic encephalopathy. For the condition, as much as possible, hypertonic glucose can be pushed intravenously. If there is no condition, oral sugar cubes, sugar saline can also be given, and if necessary, oral desserts, such as cookies, snacks, and also steamed buns can be consumed to relieve. Hypoglycemia mostly occurs in diabetic patients, and can be caused by irregular diet during the application of glucose-lowering drugs in diabetic patients. In addition, it can also be caused by people who are weak and have three irregular meals a day, such as people who do not eat breakfast. When hypoglycemia occurs, most patients may experience sudden dizziness, sweating, nausea, vomiting, some patients may also experience palpitations, chest tightness, shortness of breath, and some patients may even experience trembling of the limbs.