Ah Dopamine deprivation.
I mentioned to a lass at Alanon so years ago, when she asked why her chap went from one addiction to a new one....."Dopamine"
She looked kinda puzzled and said "Dopamine? Yes, the dope is mine.
About 20 people had convulsions and rolled on the floor, and I bet they still remember it as the wackiest meeting we ever had.