Sudden dizziness, cold sweat and lack of energy may be hypoglycemia or hypotension, firstly, blood pressure should be monitored and blood glucose checked, blood pressure should be given promptly when caused by lower blood pressure, oral raw vein rock can be given, oral saline can also be given, if necessary, intravenous infusion of saline, sugar saline or 706 plasma substitute to quickly correct hypotension. If the patient has hypoglycemia, it should be actively given to correct, mainly sugar supplementation therapy, which can be oral chocolate, sugar block or oral sugar saline, or intravenous push hypertonic glucose to quickly correct hypoglycemia, severe hypoglycemia may cause hypoglycemic encephalopathy, or even cause irreversible damage to brain cell function, and the patient may develop cognitive dysfunction, or even cause dementia in the patient, etc.