The following conditions are considered: 1. dizziness when tilting the head, but it is relieved when the head position is restored. 2. vestibular dysfunction, one of the characteristics of vestibular dysfunction is dizziness when the head is moved, but dizziness is reduced or relieved when the head is stopped. 3. vertebral artery compression syndrome, because the vertebral artery walks in the cervical vertebrae When tilting the head, the vertebral artery may twist or be compressed, causing transient cerebral artery insufficiency causing dizziness.4. Other rare conditions, such as the 8th cranial nerve being compressed by or in close contact with a blood vessel, can also cause dizziness due to the fluctuation of the blood vessel stimulating the nerve.