Vertigo can usually be caused by functional abnormalities in the following areas: 1. Inner ear (1) diseases of definite cause: inflammation, drug intoxication, trauma, syphilis, poor circulation; (2) diseases of unknown cause: Meniere’s disease, sudden deafness with vertigo, benign episodic cephalad vertigo. 2. Auditory nerve: neuritis, herpes zoster, auditory fracture, auditory neuroma. 3. Central (1) brainstem diseases: arterial insufficiency, glioma, multiple sclerosis, etc.; (2) cerebellar diseases: hemorrhage, infarction, tumor; (3) brain diseases: epilepsy, tumor; (4) chronic cerebrovascular insufficiency of blood supply. (4) Visual organs: eye muscle paralysis, refractive abnormalities. (5) Neck: cervical myelopathy, cervical spondylosis, carotid sinus syndrome, posterior cervical sympathetic nerve syndrome. 6.Psychogenic: psychosomatic, overhead vertigo. 7.Psychoneurotic: psychosis, neurosis. 8, systemic: circulatory system diseases (hypertension, hypotension, erectile dysregulation, atherosclerosis), metabolic. Sexual diseases (diabetes mellitus, hyperlipidemia), anemia, plant nervous disorders, menopausal syndrome, etc. 9, other: nasal diseases, dental diseases.