In this podcast we are discussing internet addiction, which has become a growing global phenomenon reported by professional anecdote and by mainstream media. Although internet addiction is not formally recognised by the ICD or DSM as yet, there is much research afoot to attempt to define it, and by so doing, develop specific and evidence-based ways to treat it. We discuss a two-wave prevalence study looking at how big the problem of internet addiction is, what it is comorbid with, and whether it can be seen to exist on its own as a diagnostic entity.