Video game addiction (VGA), also known as  gaming disorder or internet gaming disorder, is generally defined as the problematic, compulsive use of video games that results in significant impairment to an individuals ability to function in various life domains over a prolonged period of time. This and associated concepts have been the subject of considerable research, debate, and discussion among experts in several disciplines and has generated controversy within the medical, scientific, and gaming communities. Such disorders can be diagnosed when an individual engages in gaming activities at the cost of fulfilling daily responsibilities or pursuing other interests without regard for the negative consequences. As defined by the ICD-11, the main criterion for this disorder is a lack of self control over gaming.The World Health Organization included gaming disorder in the 11th revision of its International Classification of Diseases (ICD). The American Psychiatric Association (APA), while stating there is insufficient evidence for the inclusion of Internet gaming disorder in the Diagnostic and Statistical Manual of Mental Disorders in 2013, considered it worthy of further study.Controversy around the diagnosis includes whether the disorder is a separate clinical entity or a manifestation of underlying psychiatric disorders. Research has approached the question from a variety of viewpoints, with no universally standardized or agreed definitions, leading to difficulties in developing evidence-based recommendations.
Some state that gamers sometimes use video games to either escape from an uncomfortable environment or alleviate their already existing mental issues—both possibly important aspects in determining the psychological impact of gaming. Negative portrayal also deals with the lack of consistency in measuring addictive gaming. This leads to discussions that sometimes exaggerate the issue and create a misconception in some that they, themselves, may be addicted when they are not.The evidence of video game addiction to create withdrawal symptoms is very limited and thus debated, due to different definitions and low quality trials.The concept of video game disorder is itself being debated, with the overlap of its symptoms with other mental disorders, the unclear consensus on a definition and thresholds, and the lack of evidence raising doubts on whether or not this qualifies as a mental disorder of its own. Despite the lack of a unified definition, there is an emerging consensus among studies that Internet gaming disorder is mainly defined by three features: 1) withdrawal, 2) loss of control, and 3) conflict. Although the DSM-5 definition of video game disorder has a good fit to current methodological definitions used in trials and studies, there are still debates on the clinical pertinence.Michael Brody, M.D., head of the TV and Media Committee of the American Academy of Child and Adolescent Psychiatry, stated in a 2007 press release that "... there is not enough research on whether or not video games are addictive."