It is possible to cause headache and dizziness when cervical vertebrae compress the nerves, such as cervical vertebrae compress the sympathetic nerves, combined with insomnia or vertebral artery type cervical spondylosis. 1. When the cervical spine compresses the sympathetic nerves, the patient may have headache, dizziness, accompanied by chest tightness, palpitation, loss of appetite and other symptoms. 2. When suffering from cervical spondylosis, patients may have neck pain, accompanied by radiating pain in the upper limbs, numbness of the hands and other symptoms, which may affect the patient’s rest, and thus the patient may have headache, dizziness and other symptoms. 3. Vertebral artery-type cervical spondylosis is mainly caused by degenerative cervical spine lesions, herniated intervertebral discs compressing one or both vertebral arteries, and patients may experience symptoms such as dizziness, nausea, headache, etc., and similar manifestations require timely medical treatment. When headache and dizziness occur, other diseases need to be excluded, such as high blood pressure, primary headache and so on. If there is persistent headache and dizziness, you need to go to the hospital, improve the auxiliary examination, clarify the cause of the disease and then timely treatment.