Cervical spondylosis does not cause numbness in the back of the head, the numbness in the back of the head is often caused by the patient lying in bed for a long time, and the blood circulation is not smooth after the pillow is extruded for a long time, which causes the numbness in the local area. When the patient changes the position or lying on the side, the numbness will be significantly reduced, if the prolonged compression, it will easily cause necrosis of the nerve in the back of the head, resulting in prolonged numbness, can be appropriate oral methylcobalamin to nutritional nerve treatment. Generally such numbness will not last long, in about a week or two weeks can be completely relieved, after the relief, the numbness will not recur, you need to change the position, the blood supply to the brain and the blood circulation of the brain will play a certain auxiliary therapeutic effect.