It is important to point out that Alcorexia cannot be suffered by people whose alcohol consumption has always been low. Rather, your typical alcorexic is one who has temporarily gone from very large intake to no intake whatsoever.
Alcorexia sufferers will typically have been the most charming and fun person in your group of friends (ie the one who drank the most). Alcorexia is usually brought on after something as innocuous as simply shaming themselves the night before. The alcorexia sufferer's warped mind contains a sad, pathetic and often terrifying vision of themselves: they misleadingly believe that they are "drinking too much", when in fact, ceasing their alcohol intake can have terrible after-effects, such as memory, a sense of responsibility and the shakes.
1) You are on diet and counting calories.
2) You are going out for drinks with friends. You've got to be social!
3) You realise that beer and wine have a lot of calories.
4) You have to decide how to avaoid going "over budget" for your calories - eat supper and drink water later, or skip supper and go drinking?
5) You decide to go drinking!
6) You drink on an empty stomach
7) Hilarity ensues. Hilarity often includes falling over or vomiting.