The symptoms that cause pain and numbness on one side of the limb are mainly caused by the following: 1, cerebrovascular disease, including cerebral infarction and cerebral hemorrhage, clinical symptoms are mainly related to the lesion site and lesion area, common clinical symptoms include dizziness, headache, numbness and weakness of one side of the limb activity, and impaired movement of one side of the limb. Because the acute phase of cerebrovascular disease is better treated, it is best to check the cranial CT at the hospital to confirm the early treatment. 2, lumbar disc herniation, related to exertion, cold, common clinical symptoms are back pain, lower limb numbness, pain, progressive aggravation of the condition, can appear numbness and pain in the toes, is caused by the protruding disc compression of the sciatic nerve. 3, arthritis, if the joint parts of pain, numbness, and If the pain and numbness in the joints is aggravated by activity, it may be caused by arthritis, and the diagnosis can be confirmed by examining joint films.