796 Conditions for Further Study
Note:  Only nongambling Internet games are included in this disorder. Use of the Internet
for required activities in a business or profe ssion is not included; nor is the disorder intend-
ed to include other recreational or social Internet use. Similarly, sexual Internet sites are
excluded.
Specify current severity:
Internet gaming disorder can be mild, moderate, or severe depending on the degree
of disruption of normal activities. Individuals with less severe Internet gaming disorder
may exhibit fewer symptoms and less disruption of their lives. Those with severe Inter-
net gaming disorder will have more hours spent on the computer and more severe loss
of relationships or career or school opportunities. 
Subtypes 
There are no well-researched subtypes for Inte rnet gaming disorder to date. Internet gam-
ing disorder most often involves specific Inte rnet games, but it co uld involve non-Internet
computerized games as well, although these have  been less researched. It is likely that pre-
ferred games will vary over time as new games are developed and popularized, and it is
unclear if behaviors and consequence associat ed with Internet gaming disorder vary by
game type.
Diagnostic Features
Gambling disorder is currently the only non-substance-related disorder proposed for in-
clusion with DSM-5 substance-related and addi ctive disorders. However, there are other
behavioral disorders that show some similari ties to substance use disorders and gambling
disorder for which the word addiction is commonly used in nonmedical settings, and the
one condition with a considerab le literature is the compulsive playing of Internet games.
Internet gaming has been reportedly define d as an “addiction” by the Chinese govern-
ment, and a treatment system has been set up. Reports of treatment of this condition have