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Outline and Issues of Internet Addiction Volume 6 - Issue 5

Kazuto Doi1,2, Mayumi Doi3 , Yukoh Yaegashi4 and Mitsuhiro Nishitani*5

  • 1 Department of Pathophysiology, Faculty of Medicine, Oita University, Japan
  • 2Department of Medical Engineering, Faculty of Allied Health Sciences, University of East Asia, Japan
  • 3Department of Clinical Pharmacology & Therapeutics, Faculty of Medicine, Oita University, Japan
  • 4Department of Medical Engineering, Faculty of Health Sciences, Junshin Gakuen University, Japan
  • 5Daimon Clinic for Internal Medicine, Nephrology and Dialysis, Japan

Received: July 06, 2018;   Published: July 16, 2018

*Corresponding author: Mitsuhiro Nishitani, Daimon Clinic for Internal Medicine, Nephrology and Dialysis, Ishikawa 921-8802, Japan

DOI: 10.26717/BJSTR.2018.06.001415

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The Internet has been spreading rapidly since the late 1990’s. It exists as an indispensable tool in contemporary society. Japan’s individual Internet users have reached 80% of the population, which is convenient, but on the other hand, it is internet addiction that is becoming a some of problem. This review addresses the problems caused by Internet addiction.

What is Internet Addiction

The term “Internet addiction” refers to a situation in which “control over the use of the Internet becomes difficult and, despite various problems, it is in a state where it cannot be stopped”. It proposed first by Ivan Goldberg in 1995 [1]. Although there is no definite diagnostic criteria of Internet addiction, Internet game disorder is indicated as an item under study in the Diagnostic and Statistical Manual of Mental Disorders (DSM) published by American Psychiatric Association (Table 1). The first edition of DSM was published in 1952 and has been revised several times since then, DSM-5 was released in May 2013 [2]. DSM was created mainly by psychiatrists for the aptitude assessment of soldiers during the Second World War and the treatment diagnosis of returned soldiers. It is effectively used as an international diagnostic manual. When introducing some of the items of Internet game disorder shown in DSM-5, withdrawal symptoms occur when taking Internet games, despite recognizing tolerance and social problems, continue excessive use of Internet games, and so on. Internet game disorders are characterized by many social problems such as poor academic achievement, school refusal, social withdrawal, sleep disorder and depression.

Table 1: DSM-5 IGD-Internet gaming disorder.

State of Internet Addiction on Each Country

The Internet began to spread in the latter half of the 1990s, its history is still shallow. However, in the United States, it has been reported about Internet addiction in 1998. In 2003, also in Korea, Internet subscribers to the population of one million people became the number one in the world and the number of young people immersed in online games has increased rapidly. According to Korea’s statistics in 2009, 12.8% of young people and 6.4% of adults were reported to be Internet addiction [3]. In the Norwegian survey, it was reported that males were more likely to depend on the Internet at the ages of 16 to 29 [4], and survey in China, middle to high school and university students aged 10 to 24, men showed 10.4%, women reported 5.9% respectively [5]. Although the Internet addiction tends to be relatively large in the young generation, since there are large variations, it is only necessary to have a unified manual for diagnosing the Internet addiction, but it seems that there is no such a manual.

Subject of Internet Addiction

DSM-5, which is a de facto international manual, is often used as a diagnostic criterion for Internet addiction, but it is not made by referring to Internet addiction. Internet addiction patients do not mean those who do nothing but online games. Those who are continuing to watch videos, those who are surfing the Internet, those who are building human relationships via SNS etc., and those who use gambling or pornographic sites. There are such various types of Internet addiction patients, but classically they are classified into five types by Young et al. That is,

SCC is a malignancy of epithelial origin capable of occurring in ogans that are covered with squamous epithelium. Non-melanoma skin cancer, head and neck cancer, esophageal cancer and nonsmall cell lung cancer account for majority of cases [23]. SCC as a variant of GC is an unusual histological subtype and rare. May occur as primary SCC, adenosquamous carcinoma or as collision tumour of the stomach [2-6]. However, there was no histological evidence of either squamous differentiation of the gastric antral tumour or a primary site of SCC in the resected specimen. Synchronous SCC of the oesophagus and adenocarcinoma of the stomach has also been documented in the literature and primary SCC of the esophagus has been shown to metastasize to perigastric LN [24,25]. However, preoperative and follow-up EGD in this patient did not revealed any pathology in the esophagus and he is completely asymptomatic two years after surgery.

a) Cybersexual addiction,

b) Cyber-relational addiction,

c) net compulsions,

d) Information overload,

e) Computer addiction [6].

However, the advancement of the Internet technology is fast, there is a possibility that a new type of Internet addiction patient will appear in the future. Since it seems that some parts cannot be dealt with by classical classification, we are forced to negotiate the urgent need to formulate guidelines specialized for Internet addiction.

Secondary Problem of Internet Addiction

Although Internet addiction often matches other dependencies such as health problems, monetary economic problems, mental problems such as human relations, it contains essentially different problems. In the case of online game dependence as an example, since Internet use from midnight to dawn is the most frequent, sleep disturbance is caused almost certainly due to insufficient sleep. The most problematic thing in this sleep disorder is depression. In the case of a student, problems such as poor academic achievement, late arrival, absence, failure to go to school and other problems arise and even in subsequent life, it will have a great impact. In addition, from a viewpoint of dependence in a broad sense, it is reported that neurocyte damage in the human brain, such as alcoholism, can be seen in Internet dependent patients [7,8].


In modern society, the Internet is an indispensable tool to our daily lives, and new services will be born through the Internet for the development of the technology in the future. However, because it is a convenient tool, there is a tendency to immerse people too much and depend heavily on it. Sleep disorder is inevitable in the Internet addiction, and the economic loss caused by sleep disorder is said to be 5 trillion yen [9]. It is urgently desirable to define and diagnose Internet addiction and formulate guidelines for treatment


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