Patients with numbness in the right foot and right side of the limb, mainly consider the following causes: 1, to consider may be due to lumbar disc protrusion, cervical spondylosis or lumbar spinal stenosis and other diseases; 2, if some elderly people, suddenly appear right foot and right side of the limb numbness, to consider may be caused by acute cerebrovascular disease, generally in the parietal radiation crown area is easy to appear unilateral limb activity weakness, numbness; 3 If the patient also has irritability, irritability, sweating and other symptoms, which often recur, it cannot be excluded that it is caused by autonomic dysfunction. The specific cause needs to be clarified by the doctor’s examination, medical history and examination.