Pathogenesis of cervical vertigo

  Cervical vertigo (CV) is a vertigo caused by cervical spine lesions that imbalance the internal and external balance of the spine, causing insufficient blood supply to the extracranial segment of the carotid artery, the vertebrobasilar artery. At present, with the change of people’s lifestyle, the incidence of cervical spondylosis is even younger and more complicated, thus leading to a higher incidence of CV, and how to prevent and treat CV is also gaining more and more attention from the general public.  First of all, let’s understand the pathogenesis of cervical vertigo.  Cervical vertigo is mostly caused by vertebral artery type cervical spondylosis. The vertebral artery passes through the transverse foramen of the cervical spine, and when the osteophytes of the hook vertebral joint will squeeze or stimulate the vertebral artery to cause vertigo due to insufficient cerebral blood supply; when the cervical spine degenerates, the vertebral joint becomes unstable and the hook vertebral joint loosens or becomes dislocated, which can affect the lateral upper and lower transverse foramina and increase the relative displacement between the transverse foramina, thus distorting the vertebral artery that passes through it. At the same time, the vertebral nerve plexus around the vertebral artery can be provoked and cause contracture of the vertebral artery, which will cause more chances of vertigo.  In addition to degenerative diseases of the cervical spine, cervical vertigo can also be caused by strain or trauma to the muscles and ligaments of the neck. The brachial plexus nerve passes through the anterior and middle oblique angle muscle gap, and spasm of this group of muscles will squeeze the brachial plexus and cause anterior deltoid syndrome. And when the suboccipital muscle group behind the neck spasms, it will stimulate or compress the inferior occipital nerve, the greater occipital nerve and the vertebral artery, causing symptoms such as insufficient blood supply to the vertebral artery. Therefore, chronic strain injury such as improper sleeping posture, too high pillow, long-term low work; head and neck trauma, including traffic accidents, sports injuries, excessive forward flexion, backward tilting and lateral bending of the head and neck; neck inflammation triggering swelling or spasm of cervical muscles; developmental cervical spinal stenosis, etc. can become the cause of cervical spondylosis, which affects the blood supply of the vertebral artery to the brain and can lead to vertigo symptoms.  The vertigo symptoms of middle-aged and elderly people are relatively more common, which is related to the fact that most of the elderly people are accompanied by cardiovascular diseases such as atherosclerosis, which makes the elastic retraction force of the blood vessel wall decrease, and the blood vessel wall of vertebral artery is a high incidence area of atherosclerotic atheroma, which is more likely to cause insufficient blood supply to vertebral artery, resulting in vestibular nucleus, brainstem reticular structure and inner ear vertigo due to insufficient blood supply.