If the patient is accompanied by dizziness and weakness in the middle of the night: 1. Consider water electrolyte acid-base balance disorders, especially in hypokalemia and hyponatremia with the above typical symptoms, the most common in hypokalemia. 2. If the patient is infected, after infection of the body by bacterial, viral, or other atypical pathogens, the patient will also experience clinical symptoms of rising body temperature, body aches and pains, and weakness at night, and the above symptoms are especially likely to worsen at night. 3. At night, the above symptoms are easily aggravated.3. If the patient has other endocrine metabolic diseases, in the case of hypothyroidism and hypoadrenocorticism, dizziness accompanied by weakness may also occur at night.4. If the patient has paroxysmal hypoglycemia at night, especially when the blood glucose is less than 3.9 mmol/L, the patient will have dizziness and dizziness and weakness of the body. 5, If the patient has increased sweating caused by various factors, the patient has ionic disorders, or gastroenteritis, nausea, vomiting more often, resulting in blood volume insufficiency, there will also be dizziness and weakness in the middle of the night.