The pain inside the neck is considered to be nerve root cervical spondylosis, neck and shoulder myofasciitis, and neck tumor. 1. Neurogenic cervical spondylosis: this disease is a nerve root lesion caused by a variety of factors, such as degenerative changes in the cervical spine, abnormal activity of vertebral segments, herniated discs or hyperplasia at the posterior margin of the vertebral body, which will compress the nerve root or stimulate the nerve root, causing neck pain. 2. Neck and shoulder myofasciitis: Long-term bad posture, sudden strenuous exercise or sleeping with too high or too low pillow and incorrect sleeping posture will cause muscle injury of the neck and head, resulting in neck and shoulder myofasciitis. 3. Neck tumor: the infiltration of neck tumor into bones will destroy bones and soft tissues to compress the nerves and damage the nerves, thus causing pain. If you have pain in the neck, you should pay attention to it and go to the hospital for treatment under the doctor’s guidance.