title: Enhanced dilatory response to histamine in large extracranial vessels in chronic cluster headache.
mesh_terms: D000328:Adult; D000368:Aged; D001158:Arteries / Q000187:drug effects*; D001706:Biopsy; D002908:Chronic Disease; D003027:Cluster Headache / Q000188:drug therapy / Q000503:physiopathology*; D006632:Histamine / Q000494:pharmacology* / Q000627:therapeutic use; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D008875:Middle Aged; D014653:Vascular Headaches / Q000503:physiopathology*
chemical_list: D006632:Histamine