I. Rotational vertigo can be divided into two categories: peripheral vertigo and central vertigo according to its etiology. 1. Peripheral vertigo: It refers to vertigo caused by lesions of the vagus or vestibular nerve in the inner ear. It is common in Meniere’s disease (once translated as Meniere’s disease), vaginitis, drug-related vertigo (caused by the use of streptomycin or gentamicin and other drugs) and vestibular neuritis, etc. 2. Central vertigo: vertigo caused by lesions of brainstem, cerebellum, brain and spinal cord. It is common in vertebrobasilar artery insufficiency of blood supply, intracranial tumor, intracranial infection, multiple sclerosis, vertigo epilepsy and traumatic vertigo, etc. General vertigo 1. Cardiogenic vertigo: Commonly caused by cardiac arrhythmia and cardiac insufficiency, etc. 2.Pulmonary vertigo: It can be seen in pulmonary insufficiency caused by various reasons. 3. Ophthalmogenic vertigo: It is common due to refractive error, fundus arteriosclerosis, hemorrhage and ocular muscle paralysis, etc. 4.Blood pressure vertigo: High or low blood pressure can cause vertigo. 5, other: anemia, cervical spondylosis, acute fever, gastroenteritis, endocrine disorders and neurosis can cause dizziness (1) anemia elderly people who have dizziness, weakness and pale face should go to the hospital to check if they are anemic. Elderly people are prone to anemia if they do not pay attention to nutritional care. In addition, anemia can be secondary to dyspepsia, peptic ulcer, gastrointestinal bleeding, and chronic inflammatory diseases in elderly patients. (2) High blood viscosity hyperlipidemia and thrombocythemia can cause high blood viscosity and slow blood flow, resulting in adequate blood supply to the brain and the occurrence of symptoms such as easy fatigue, dizziness and weakness. Among the many causes of hyperlipidemia, the most important one is the usual diet structure and unreasonable. (3) Patients with cerebral atherosclerosis feel dizzy, and often have insomnia, tinnitus, emotional instability, forgetfulness, and numbness of the limbs. Cerebral arteriosclerosis makes the inner diameter of blood vessels smaller, and blood flow in the brain decreases, resulting in insufficient blood and oxygen supply to the brain, causing dizziness. (4) Cervical spondylosis often presents with neck tightness, limited flexibility, occasional pain, numbness and coldness of the fingers, and a feeling of heaviness. Cervical spine hyperplasia squeezes the vertebral artery in the neck, causing insufficient blood supply to the brain, which is the main cause of dizziness caused by this disease. (5) HypertensionPatients with hypertension are often accompanied by dizziness, head swelling, panic, irritability, tinnitus, insomnia and other discomforts. (6)Heart diseaseIn the early stage of coronary heart disease, some people may feel headache, dizziness, weakness of limbs, and difficulty in concentration. This is mainly due to atherosclerosis of the coronary arteries of the heart, resulting in insufficient blood supply and causing dizziness. The best solution for dizziness is prevention. 2, the elderly should regularly make blood pressure, heart sound, heart rhythm, as well as blood routine, blood lipids, blood viscosity, electroencephalogram, cerebral hemogram, neck x-ray and other examinations to prevent problems before they occur.