Drinking dizziness is a transient manifestation in most people and generally does not need to be treated. After drinking, the common causes of dizziness are as follows: 1. Drinking can cause cerebral vasodilation: because after alcohol is metabolized in the body, this time there will be ethanol into acetaldehyde. And acetaldehyde can cause the dilation of cerebral blood vessels, blood flow speed up, and even increase the intracranial pressure, this time will appear dizziness. 2, water loss: generally after drinking, especially after drinking beer, will increase the number of times people urinate, if it is to solve the number of urine so that may cause water loss and electrolyte disorders in the human body, resulting in dizziness. 3, after drinking a lot of alcohol can cause lower blood sugar: lower blood sugar levels, this time will affect the brain’s energy supply, nerve cell metabolism dysregulation, can lead to dizziness. Therefore, diabetic patients should not drink. 4, after drinking can inhibit the excitability of nerve cells: after drinking a lot of alcohol will have inhibited nerves, which leads to a decrease in excitability and dizziness. The reason for dizziness after drinking alcohol is sometimes related to the concentration of alcohol, the amount of alcohol consumed and the amount of aromatic impurities contained, after drinking a lot of alcohol can sometimes have an impact on the function of the cerebellum. Because the cerebellum maintains the body’s balance, drinking a lot of alcohol will affect the cerebellum’s balance function, and dizziness will occur at this time. If you get dizzy after drinking, or if you get dizzy for a long time, it is recommended that you seek medical attention.