Why do you have a headache the day after drinking?

Headache the day after drinking alcohol may be caused by dilation of blood vessels in the head and nerve stimulation, or it may be caused by other diseases such as high blood pressure, migraine, and neurological headache.
After drinking alcohol will produce acetaldehyde after metabolized by the liver. Acetaldehyde will make the blood vessels in the head dilate and increase the speed of blood flow, which will make the patient suffer from vascular fluctuation headache, so the patient will have a headache manifestation the day after drinking alcohol. In addition, alcohol will stimulate and paralyze the nervous system, which may cause patients to have a headache the next day after drinking.
In addition to this, patients with underlying diseases such as high blood pressure, migraine, neurological headache, cerebral hemorrhage, etc. may also experience headache the day after drinking alcohol.
It is recommended that patients who have headache the next day after drinking alcohol should ensure enough sleep, avoid exertion and drink more water. You can eat light and easy-to-digest food.
If the headache symptoms are severe, then you need to consult a doctor who will take appropriate measures to treat the cause.