title: Tourette syndrome: a case for noradrenergic and opiatergic mechanisms.
mesh_terms: D001921:Brain / Q000503:physiopathology*; D004723:Endorphins / Q000502:physiology*; D006801:Humans; D009638:Norepinephrine / Q000502:physiology*; D009435:Synaptic Transmission; D005879:Tourette Syndrome / Q000503:physiopathology*
chemical_list: D004723:Endorphins; D009638:Norepinephrine