The importance of internet is growing widely. Use of internet as a means of communication, entertainment, and gathering knowledge has risen. Using internet has become a part of our daily activities since it helps us to exchange information in matter of seconds. The Internet has been growing exponentially and is instrumental in various fields, such as business, education and health care arenas. Computer access and use among adolescents and other age brackets have grown exponentially over the past decade. The Internet is viewed as a new social environment in which universal adolescent issues pertaining to identity formation, sexuality and self-worth are explored in a virtual world. With this information this article focuses on internet addiction, an addiction which is most prevailing in our society irrespective of age. Internet addiction like any other addiction is compulsive dependence on internet. The present article talks about the percentage of internet users in various regions of the world, various types of internet addiction, the at-risk people to develop internet addiction, diagnosis and how it can be alleviated. Key words: Internet; uses of internet; internet addiction; internet addiction types; treatment