The bulging of the bones in the back of the neck may be a normal physiological phenomenon, or it may be caused by disorders of the small joints of the cervical spine or cervical spondylosis. 1. Physiological phenomenon: Due to individual differences in development, the bones may be thicker, resulting in the bulging of the back of the neck. In addition, if the local muscle tissue is underdeveloped, it may also highlight the large bones, resulting in the bulging of the back of the neck. 2. Disorders of the cervical small joints: Disorders of the cervical small joints may lead to compression of the muscles and nerves, resulting in a bulging of the back of the neck. You can use blood circulation and analgesic drugs such as blood circulation and analgesic capsules. 3. Cervical spondylosis: Cervical spondylosis may lead to changes in the structure of the cervical vertebrae, resulting in the bulging of the back of the neck bones, and drugs such as Celecoxib can be used to relieve pain and achieve therapeutic effects. All of the above treatments should be used under the guidance of a physician. If the back of the neck bone is bulging, it may also be due to cervical vertebrae prolapse, etc., which should be promptly examined and treated in a hospital.