Well anything that goes to this type of excess will be a problem though: "a puzzle game on her phone that she would play obsessively* -- forgetting to eat, sle

Well anything that goes to this type of excess will be a problem though: "a puzzle game on her phone that she would play obsessively* -- forgetting to eat, sleep, show up for work, having basic human interaction and even requiring physical therapy at one point for the muscle strain of sitting in the position to play the game for hours on end." What we are probably dealing with here is more than a simple addiction (to which your suggestion is good and would definitely be in the right direction). What we have is a mental problem that includes addictive traits. After all the DSM is fairly arbitrary (as are medical definitions).