Are you asking for real? Then you might start with wikipedia https://en.wikipedia.org/wiki/Addiction https://en.wikipedia.org/wiki/Addiction "Addiction is a

Are you asking for real? Then you might start with wikipedia https://en.wikipedia.org/wiki/Addiction https://en.wikipedia.org/wiki/Addiction "Addiction is a neuropsychological disorder characterized by a persistent and intense urge to use a drug or engage in a behavior"