Numbness in the legs in the morning may be caused by the body being in a posture for a long time during sleep, which compresses the nerves, or it may be caused by peripheral blood circulation. In general, it occurs mostly in middle-aged and elderly people, mostly caused by atherosclerosis, patients may have a history of hyperlipidemia and diabetes and hypertension, patients with atherosclerosis, narrowing of the lumen of blood vessels, poor vascular elasticity, if patients have a history of diabetes, hyperlipidemia, increased blood viscosity, slow blood flow, sleep may further cause blood flow slowdown, causing peripheral blood circulation impairment. Patients may experience numbness in the legs and also sensory disturbances in the extremities, which may manifest as numbness in the hands and feet and glove and sock-like sensory disturbances. It may also be caused by lumbar spine lesions, mainly due to lumbar disc herniation compressing the lumbar medulla, and if necessary, lumbar spine MRI should be examined to clarify the diagnosis.