The document discusses Internet addiction being recognized as a clinical disorder. It notes that excessive online activities like gaming, viewing pornography, emailing and texting have been identified as causes. Internet addiction has four main components: excessive use associated with a loss of time sense; withdrawal feelings when the computer is unavailable; needing better computers/more hours online; and negative life repercussions like arguments and social isolation. A case study of South Korea found that some die from blood clots from prolonged sitting and one was murdered over an online game, showing it is a serious public health issue there. Self-help groups have emerged online and clinics have opened to help people overcome their Internet addiction.