[Videogame addiction: a danger for only at-risk children or for all children].

With the rapid growth in the number of children and adolescents having access to videogames, there is a risk of addictive behavior, especially among those with underlying mental illnesses. Yet there is no consensual definition of videogame addiction. Depression, anxiety disorders and hostility are all associated with overuse, but attention-deficit hyperactivity disorder (ADHD) is the most significant predictor.