title: Some observations on pain in cluster headache.
mesh_terms: D000328:Adult; D002339:Carotid Arteries / Q000503:physiopathology; D005260:Female; D006261:Headache / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014653:Vascular Headaches / Q000209:etiology* / Q000503:physiopathology / Q000628:therapy