addict - n. a person who likes or enjoys something very much and spends a large amount of time doing it, watching it, etc.
disorder – n. a physical or mental condition that is not normal or healthy
extreme – adj. more than the usual or accepted
gaming – n. the activity of playing computer games
patient - n. a person being treated by a doctor for a health problem
boot camp - n. a short and very difficult training program, also refer to military camp for basic training.