title: Dopamine, the second putative protagonist in headache.
mesh_terms: D000818:Animals; D001971:Bromocriptine / Q000627:therapeutic use; D004298:Dopamine / Q000502:physiology*; D006220:Haloperidol / Q000627:therapeutic use; D006261:Headache / Q000188:drug therapy / Q000503:physiopathology*; D006801:Humans
chemical_list: D001971:Bromocriptine; D006220:Haloperidol; D004298:Dopamine