Excessive problematic use of the internet has been a topic of discussion in the academic literature for many years and has gained more attention recently. The majority of those at risk are in early adulthood. Pathological internet use (PIU) is also termed internet addiction disorder (IAD), with both terms used to link internet use with addiction terminology.

Consistent with other psychiatric conditions such as depression symptoms, PIU prevalence rates among adolescents vary widely from as low as 0.3% to 38%. Likewise, PIU prevalence among college students (young adults) showed a wide variation ranging from 3% to 34%, worldwide. Nowadays, internet gaming addiction became a problematic issue in adolescent.

This is a case -control study, aimed to evaluate the prevalence and risk factors of internet gaming addiction among adolescents and its relationship with emotion regulation and comorbid psychiatric disorders.

Inclusion criteria:

1. Both males and females were included.
2. Age ranges from 10- 18 years.
3. Willing of the parents or the caregivers to participate in the study.

Exclusion criteria:

• Children with intelligence quotient below 70.
• Children with history of substance use or psychiatric disorders.
• Children with medical or other neurological conditions.

Egyptian adolescent will be the target population. Target students will be selected randomly by using a multistage stratified cluster sampling technique.