The first is peripheral vertigo, which refers to the dizziness caused by the dysfunction of the vestibular organs of the inner ear, and mostly occurs after exercise. Second, cervical dizziness, mostly dizziness at the back of the head, with mild symptoms at the beginning, and headache and head swelling at the back of the head, which will be relieved after lying down with the neck braked and resting, caused by the compression of local blood vessels and nerves by cervical spondylosis. Thirdly, dizziness caused by insufficient blood supply to the brain is more common, and is easily seen after excessive high blood pressure fluctuations, and is caused by dizziness and vertigo due to cerebrovascular tension spasm and insufficient blood supply.