"Hangover" is the bad feeling of the next day that follows after an evening when we have consumed more alcohol than we should.
The most common symptoms are strong and persistent headaches, thirst, symptoms of depression and discomfort, and sensitivity to light and noise.
What causes hangover is mainly dehydration caused by the diuretic property of alcohol, dehydration that becomes more intense with the increase of the amount of alcohol we consume. Also, herbal substances contained in certain alcoholic beverages may cause toxicity and cause the corresponding hangover symptoms.