Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. COmmonly known as the overuse of the Internet, the Internet Addiction Disorder involves serious changes in certain regions of web user s brain. REcent studies show that virtual addiction may damage the brain, relating analogous effects with heroine, alcohol or gambling addiction, for example. HOwever, more work is to be done for a better understanding of its mechanisms. LEarn more about the Internet Addiction Disorder, its symptoms, effects and treatment in this book.