WHO classifies 'gaming disorder' as mental health condition. there are three major diagnostic features or characteristics of gaming disorder. "One is that the gaming behavior takes precedence over other activities to the extent that other activities are taken to the periphery," he said. The second feature is "impaired control of these behaviors," Poznyak said. "Even when the negative consequences occur, this behavior continues or escalates." A diagnosis of gaming disorder, then, means that a "persistent or recurrent" behavior pattern of "sufficient severity" has emerged, according to the ICD. A third feature is that the condition leads to significant distress and impairment in personal, family, social, educational or occupational functioning,

https://edition.cnn.com/2018/06/18/health/video-game-disorder-who/index.html