[Internet addiction: the medical challenge of the 21st century? br].

As a result of digitalisation and the increasing use of the internet, its problematic use is on the rise in the 21st cen-tury, with a predominant impact on minors and a potentially increasing challenge for health care systems in the fu-ture. The main risk factors for this phenomenon are age, inadequate social and family relationships, and can be as-sociated with mental problems such as depression and anxiety, somatic illnesses, often with additional dependencies. Imaging studies can detect abnormally functioning brain areas in the affected individuals, however, there is a signifi-cant heterogeneity among them. Similar to other addictions, extensive internet use negatively affects the individual in all areas of life. We do not have a high level of evidence for treatment yet, but it appears that treatments used in other (classic) addictive diseases may be effective.