There is no sign of cervical misalignment. When headache, dizziness, vision and hearing impairment, numbness in the hands, and a foreign body sensation in the throat occur, the possibility of cervical spine disease needs to be considered. If the cervical spine misalignment compresses the nerves, it will cause headache, which is usually a pain behind the occipital bone and radiates to the top of the head. If the compression of blood vessels will have dizziness, dizziness symptoms are obvious when turning the neck. If the cervical subluxation compresses the nerves, there may also be visual impairment, blurred vision, hearing impairment, tinnitus, and deafness. If the brachial plexus nerve is compressed, there may be numbness in the hands, weakness in grasping, and muscle atrophy. If the cervical spine is misaligned forward compressing the trachea esophagus, there may be a foreign body sensation in the pharynx. Cervical vertebrae misalignment can cause cervical spine forward flexion, backward extension, and rotation activities are limited. When the above situation occurs, you need to go to the hospital to take pictures to check whether there is cervical vertebrae subluxation, and then the doctor will take manipulation reset or traction reset or even surgical treatment.