The Upper Cervical spine plays a vital role in supporting the head, protecting the brainstem, and allowing comfortable movement of the neck. When this area is not functioning well, it may contribute to neck pain, headaches, dizziness, vertigo, changes in posture, reduced range of motion, vagus nerve problems, jaw pain, face pain, ear pain, tinnitus, pain that radiates into the shoulders, arms, elbows hands, or upper back.