Numbness in the legs may be caused by complications related to diabetes. If the patient has high blood sugar for a long time, it may cause destruction of the peripheral nerves in the limbs, which in turn may cause the symptoms of numbness in the legs. It may be caused by vascular disease in the lower extremities, such as arterial or venous obstruction, which may lead to impaired blood circulation in the lower extremities, followed by symptoms of coldness and numbness. It may be caused by central neuropathy, especially when brain hemorrhage or cerebral infarction occurs, there are symptoms of numbness in the limbs especially easily. There may also be some peripheral nerve-related diseases, such as lumbar disc herniation or cervical spondylosis, which can cause numbness in the legs. Then there is the spinal cord injury, commonly caused by patients with very serious injuries to the spinal cord, resulting in compression of the spinal cord, or even transection, will produce the clinical symptoms of numbness in the legs.