[ABSTRACT] The revolution that the Internet use is causing in the society arrives to the field of the mental health in form of controversy on the beneficial or pernicious uses of this new technology. In this article the impact of Internet is revised in the development of new pathologies like the Internet Addiction and the new manifestations that old dysfunctions can present, like they are problem gambling and paedophilia, and that the professionals of the mental health should keep in mind are di