Causes of foot numbness and hand numbness: 1. If the patient is lateralized foot numbness and hand numbness, and it appears suddenly, consider the cause of cerebrovascular disease is greater. The general cerebrovascular disease can occur bleeding or vascular occlusion, the patient can appear the performance of neurological impairment of the brain, can appear hand numbness, foot numbness accompanied by dizziness, headache, language stupidity, aphasia and other symptoms, after the head CT or nuclear magnetic examination can confirm the diagnosis. 2, clinically can also be seen in the cervical spine, lumbar spine lesions, due to cervical lumbar disc herniation compression of the dural sac, stimulation of nerve roots, etc. can appear hand numbness, foot numbness 3, can also be seen in peripheral neuropathy, especially the end of the limbs symmetrical numbness, can be seen in diabetes, alcohol and the end of the limbs exposed to toxic substances leading to peripheral nerve damage, can appear hand numbness, foot numbness, if necessary, electromyography examination to confirm the diagnosis.