There are three main causes of numbness, swelling and pain in the hands and feet: 1. Spinal cord cervical spondylosis, which is caused by degeneration and hyperplasia of the cervical spine, resulting in narrowing of the spinal canal and compression of the spinal cord, resulting in pressure and ischemia of the nerve bundles in the spinal cord, resulting in numbness, swelling and pain in the relevant nerve distribution areas. 2. Intracranial abnormalities, such as brain tumors, brain hemorrhage, cerebral infarction, may lead to functional abnormalities of the brain’s 3, excessive fatigue in the hands and feet, such as long-distance travel, continuous exertion, resulting in the formation of strain, which will produce more local metabolites and inflammation, which will stimulate the peripheral nerves around the hands and feet numbness, swelling and pain, which can easily occur after cold and excessive exertion. Further aggravation.