Incorrect sleeping position such as toilet squatting for a long time, pregnancy, emotional excitement such as anger or crying, etc. can appear numbness in the hands and feet, generally in a short period of time can be eliminated will not be a major problem. If the numbness of the hands and feet for a longer period of time, more than a day can not be relieved, we should pay attention to the body whether there are signs of disease: 1, if the elderly appear on one side of the limb numbness does not exclude cerebrovascular disease, should go to the neurology department to check and then clear. 2, patients with diabetes appear numbness of the hands and feet to consider peripheral neuritis, generally bilateral symmetry. There are also some people who use certain drugs, can also appear numb hands and feet and other peripheral neuritis symptoms. 3, cervical, lumbar spine disease, such as lumbar disc herniation can cause unilateral foot numbness, often accompanied by low back pain. In the case of spinal cord cavitation, numbness and sensation of the limbs or dysfunction can also occur. 4, also seen in vitamin, trace element deficiency, heavy metal or organic solvent poisoning, hypoglycemia, uremia, Guillain-Barré syndrome, paraneoplastic syndrome, etc., can also affect the peripheral nerve phenomenon of numbness in the hands and feet, so patients with numbness in the hands and feet, need to go to a regular hospital to clarify the specific cause.