The Evolution of Internet Addiction Disorder.- Structural Brain Imaging and Internet addiction.- Functional imaging of Internet gaming disorder.- PET and Internet addiction.- Functional brain changes in response to treatment of Internet gaming disorder.- Molecular genetics, personality and Internet addiction.- Autonomic nervous system and brain circuitry for Internet addiction.- A short summary of the neuroscientific findings on Internet addiction.- The impact of Psychoinformatics on Internet addiction.- Pharmacological treatment of Internet addiction.- Therapeutic interventions for treatment of adolescent Internet Addiction - Experiences from South Korea.- Therapeutic interventions in the treatment of Internet addiction - experiences from Germany.- The national policy of Korea for Internet addiction.