Computer addiction is a form of behavioral addiction that can be described as the excessive or compulsive use of the computer, which persists despite serious negative consequences for personal, social, or occupational function. Another clear conceptualization is made by Block, who stated that "Conceptually, the diagnosis is a compulsive-impulsive spectrum disorder that involves online and/or offline computer usage and consists of at least three subtypes: excessive gaming, sexual preoccupations, and e-mail/text messaging". Computer addiction is not currently included in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) as an official disorder. The concept of computer addiction is broadly divided into two types, namely offline computer addiction, and online computer addiction. Offline computer addiction is normally used when speaking about excessive gaming behavior, which can be practiced both offline and online. Online computer addiction, also known as Internet addiction, gets more attention in general from scientific research than offline computer addiction, mainly because most cases of computer addiction are related to the excessive use of the Internet.
Experts on Internet addiction have described this syndrome as an individual working intensely on the Internet, prolonged use of the Internet, uncontrollable use of the Internet, unable to use the Internet in an efficient, timely matter, not being interested in the outside world, not spending time with people from the outside world, and an increase in their loneliness and dejection.
Being drawn by the computer as soon as one wakes up and before one goes to bed
Replacing old hobbies with excessive use of the computer and using the computer as one's primary source of entertainment and procrastination
Lacking physical exercise and/or outdoor exposure because of constant use of the computer, which could contribute to many health problems such as obesity
Backache
Headaches
Weight gain or loss
Disturbances in sleep
Carpal tunnel syndrome
Blurred or strained vision
Depression and marital infidelity
Excessive computer use may result in, or occur with:
Lack of face to face social interaction
Computer vision syndrome
Kimberly Young indicates that previous research links internet/computer addiction with existing mental health issues, most notably depression.