Dysfunction of the striatum may prove to be the link between OCD,<unk>  and SUD. According to research, the 'impulsiveness' that occurs in the later stages of OCD is caused by progressive dysfunction of the ventral striatal circuit. Whereas in case of<unk>  and SUD, the increased dysfunction of dorsal striatal circuit increases the "ICD and SUD behaviours that are driven by the compulsive processes". OCD and<unk>  have traditionally been viewed as two very different disorders, the former one is generally driven by the desire to avoid harm whereas the latter one driven "by reward-seeking behaviour". Still, there are certain behaviors similar in both, for example the compulsive actions of<unk>  patients and the behavior of reward-seeking (for example hoarding) in OCD patients.
Impulse-control disorder
Episodic dyscontrol syndrome
Frontal lobe disorder
Tic disorder
Motivational deficiency disorder
Adult attention deficit hyperactivity disorder
Nightmare disorder
Psychoorganic syndrome