Drink a headache, use a towel, head, hot water or cold water?
Brain blood supply is inadequate: drinking lowers brain blood flow, while a decrease in brain blood flow causes lactic acid, oxygen ions, and alpha ions in the brain. The accumulation of adenosine, prostaglandins, and catecholamines - these are substances that cause pain in themselves - and these can cause cerebrovascular dilatation.
Amines: beer, wine and wine to stimulate the rich in amine, amine itself and catecholamines, stimulates the sympathetic nerve endings release adrenaline, and adrenaline has the effect of vasoconstriction and increased blood pressure, resulting in a headache.
Have a headache after drinking -- fusel oil provoked evil: whether it is brewed wine or distilled liquor have found trace amounts of fusel oil and wine, the fusel oil is caused after drinking will faint pain.
