Table 1 Diagnostic criteria of IGD in DSM-5

Repetitive use of internet-based games, often with other players, that leads to significant issues with functioning. Five of the following criteria must be met within 1 year:

A. Preoccupation or obsession with internet games.

B. Withdrawal symptoms when not playing internet games.

C. A build-up of tolerance – more time needs to be spent playing the games.

D. The person has tried to stop or curb playing internet games, but has failed to do so.

E. The person has had a loss of interest in other life activities, such as hobbies.

F. The person has had continued overuse of internet games even with the knowledge of how much they impact a person’s life.

G. The person lied to others about his or her internet game usage.

H. The person uses internet games to relieve anxiety or guilt – it is a way to escape.

I. The person has lost or put at risk an opportunity or relationship because of internet games.