Numbness in the hands and feet after sleep is a common clinical symptom, the main causes of numbness in the limbs are: 1, diabetes, diabetes is a metabolic disorder disease, the main clinical symptoms are polydipsia, polyphagia, polyuria, weight loss, etc., if the blood sugar control is not stable can cause diabetic peripheral neuropathy, such as numbness in the limbs, gangrene, etc. 2, cerebral infarction, cerebral infarction is a common cerebrovascular disease, mainly It is caused by cerebral atherosclerosis, which can cause symptoms such as dizziness, headache, numbness of one or both limbs, and impaired limb movement. 3, dyslipidemia, dyslipidemia refers to the thickening of blood lipids, which causes symptoms of insufficient blood supply to the extremities after sleep due to slowed blood flow and thickening of blood lipids, such as numbness of the extremities. Incorrect sleep posture can also cause numbness in the limbs, usually maintain good sleep habits, do not stay up late, a light diet, more exercise, you can go to the hospital for further examination to confirm the diagnosis.