The gambling disorder was removed from impulse control disorders brought to the head of substance and related disorders with DSM-5. It is one of the reasons for this change to be seen in gambling disorders of malpractice processes in the reward and punishment systems seen in substance use disorders. In the development and maintenance of pathological gambling addiction, it has been shown that inhibition of behavior has an important role rather than impulsivity. Delay in suppression is one of the executive functions and is mainly due to prefrontal dysfunction. For this reason, investigations also examined brain functions in gamblers.