Video game addiction is hypothesized to be an excessive or compulsive use of computer games or video games, which interferes with a person's everyday life. Video game addiction may present itself as compulsive gaming, social isolation, mood swings, diminished imagination, and hyper-focus on in-game achievements, to the exclusion of other events in life. In May 2013, the American Psychiatric Association (APA) proposed criteria for video game addiction in the 5th edition of the Diagnostic and Statistical Manual of Mental Disorders, concluding that there was insufficient evidence to include it as an official mental disorder. However, proposed criteria for "Internet Gaming Disorder" are included in Section 3, Conditions for Further Study. While Internet gaming disorder is proposed as a disorder, it is still discussed how much this disorder is caused by the gaming activity itself, or whether it is to some extent an effect of other disorders. Contradictions in research examining video game addictiveness may reflect more general inconsistencies in video game research. For example, while some research has linked violent video games with increased aggressive behavior other research has failed to find evidence for such links.
The American Psychiatric Association decided that enough evidence exists to propose the potential disorder of video game addiction as a "condition requiring further study" in the Diagnostic and Statistical Manual of Mental Disorders as Internet gaming disorder. Video game addiction is a broader concept than internet gaming addiction, but most video game addiction is associated with Internet gaming. APA suggests, like Khan, the effects (or symptoms) of video game addiction may be similar to those of other proposed psychological addictions. Video game addiction may be an impulse control disorder, similar to compulsive gambling APA explains why Internet gaming disorder has been proposed as a disorder: