Internet addiction has attracted much attention with scientists and addiction counselors. Yet, diagnostic criteria has not clearly been established. Internet addiction does not even appear in the DSM-V (Diagnostic and Statistical Manual of Mental Disorders of the American Psychiatric Association). Nevertheless, problems stemming from this addiction affect 1.5 to 2% of the population. These figures taken from the clinical study done by Magali Dufour, Director of the intervention en toxicomanie programme at the Université de Sherbrooke, are approximate since there is no consensus on the definition of the problem.
According to clinical psychologist, Marie-Anne Sergerie, PhD, internet addiction is defined by «the use of technology and means of communication via internet that causes problems for the individual». The distress and problems caused by problematic internet use can have repercussions on psychological, social and professional levels. Marie-Anne Sergerie, PhD. describes the physical and psychological symptoms caused by internet addiction: