Numbness and pain in the hands and feet may be caused by physiological reasons, but also may be caused by cervical and lumbar spine lesions, cerebrovascular disease, diabetes and other diseases. 1. Physiological reasons: If you keep a fixed position for a long time, you will be prone to poor blood circulation, resulting in insufficient blood supply to the hands and feet locally, and transient numbness and pain in the hands and feet. 2. Cervical and lumbar spine lesions: If you suffer from lumbar disc herniation, it will be easy to make the nerve root compression, resulting in numbness of the hands and feet, numbness and pain symptoms. The condition will be aggravated when the patient does bending and twisting of the head. 3. Cerebrovascular disease: when the patient’s central nervous system is damaged, it will be easy to appear numbness and pain in the hands and feet, accompanied by limb weakness, tinnitus and other symptoms. 4. Diabetes mellitus: due to the long-term effect of high sugar, a large amount of sugar and protein will affect nerve conduction, damage to sensory nerves and motor nerves, resulting in numbness and pain in the hands and feet. After excluding physiological factors, patients with numbness and pain in hands and feet should go to the hospital in a timely manner to clarify the cause of the disease and standardize the treatment under the guidance of professional physicians.