Dizziness is a common functional brain disorder and a very common clinical symptom that can be caused by a number of factors. The first aspect is that many people experience dizziness and pain when they are tired and sleep deprived and stay up late. Secondly, dizziness and headache may occur when blood pressure fluctuates, and the patient may feel unstable walking and drifting feet, and the nature of the headache is mostly head swelling and pain, which can be clarified by blood pressure measurement. Thirdly, the most common cause of dizziness and pain in the elderly is related to long-term cerebral arteriosclerosis and chronic ischemia and hypoxia in the brain tissue, which can be clarified by transcranial Doppler examination.