The symptoms of hand and foot numbness, caused by the following main causes: 1, cervical and lumbar spine disease, including cervical spine disease and lumbar spine disease, protruding disc compression of the brachial nerve can cause the symptoms of finger numbness, protruding disc compression of the sciatic nerve can cause the symptoms of lower limb numbness. 2, peripheral neuritis, is a demyelinating lesion of the peripheral nerve, common clinical symptoms are symmetrical abnormal sensation at the end of the limb The common clinical symptoms include symmetrical sensory abnormalities at the end of the limb, pain, numbness and weakness, coldness and pallor of the fingertips, etc. The causes are poisoning, infection, malnutrition, etc. 3, complications of diabetes, if there is a history of diabetes and symptoms of numbness in the hands and feet, it may be peripheral neuropathy of diabetes, peripheral neuropathy is a common complication of diabetes, caused by malnutrition at the end of the limb, usually pay attention to rest and avoid strain, it is best to go to the hospital for further It is best to go to the hospital for further examination to confirm the diagnosis.