Hangover guilt, sometimes known as the "beer fear," is something many experience after a night of too much drinking. When you wake up with a sore head and a foggy memory, you can quickly jump to feeling anxious about what happened the night before.
But hangovers can have psychological symptoms too, especially feelings of anxiety. This phenomenon has been so widely reported that it even has its own name: hangxiety.
Why is this? Alcohol is a depressant which affects your brain's natural level of happiness chemicals like serotonin and dopamine. This means that although you'll feel an initial 'boost' the night before, the next day you will be deficient in these same chemicals, which may lead to feeling anxious, down or depressed.