Cervical spondylosis triggers increased sympathetic excitability in the head, neck, chest, and epigastrium, which can trigger a range of symptoms. In the case of cranial blood vessels, sympathetic hypertonia can put them in a state of spasm. Examination will show thin blood vessels, rapid blood flow, and a lower than normal blood supply to the brain. Memory loss, forgetfulness, confusion and lack of wakefulness during the day. At night, after falling asleep, the body is in a dormant state and sympathetic tone decreases. The cerebral blood vessels are in a relaxed state, cerebral blood flow increases, and the brain is in a state of passive excitation, causing insomnia. The result of cervical spondylosis causing blood supply disorder to the brain is “sleeplessness during the day and sleeplessness at night”.