Dizziness, headache, nausea and numbness in the limbs are known to be common symptoms in patients with cervical spondylosis. However, these symptoms are similar to those of diseases such as the flu, and patients cannot easily identify them. So what are the special signs that can indicate that people have cervical spondylosis? Vertigo Some people with cervical spondylosis often feel dizzy or even fall to the ground suddenly due to a sudden head twist. However, such patients are able to wake up and stand up quickly after the fall, without any impairment of consciousness and with no obvious sequelae afterwards. This is due to hyperplastic changes in the cervical spine that compress the vertebral artery, causing a transient lack of cerebral blood supply. Such patients may have symptoms of vegetative dysfunction such as headache, nausea, vomiting and sweating. Unstable blood pressure Some patients with cervical spondylosis often have symptoms of increased or decreased blood pressure (increased blood pressure is more common, so it is also called “cervical hypertension”). This is caused by abnormal blood supply to the basilar artery and sympathetic nerve dysfunction caused by cervical spondylosis. Swallowing disorder Some patients with cervical spondylosis may have symptoms such as a feeling of obstruction in the throat when swallowing or a foreign body feeling in the esophagus. This is due to direct pressure on the back wall of the esophagus by the bones at the front edge of the cervical spine or spasm (or excessive relaxation) of the esophagus caused by the plant nerve dysfunction caused by cervical spondylosis. Such patients may also suffer from nausea, vomiting, hoarseness, dry cough and chest tightness. Visual impairment Some patients with cervical spondylosis may have symptoms such as decreased visual acuity, eye swelling and pain, photophobia, tearing, unequal pupil size or even reduced visual field. This is caused by autonomic dysfunction and ischemia in the visual center of the occipital lobe of the brain due to cervical spondylosis. Cervical heart syndrome Some patients with cervical spondylosis may have symptoms such as pain in the precordial region, chest tightness and premature beats and ST-segment changes on the electrocardiogram, which is clinically called cervical heart syndrome. The appearance of cervical heart syndrome is caused by the irritation and compression of the cervical dorsal nerve after the lesion of the cervical spine. Experts tell us that people with a high incidence of cervical spondylosis (such as urban white-collar workers) can consider themselves suffering from cervical spondylosis if any of the above five special signals appear, and should go to the hospital for examination in time to avoid delaying treatment.