title: Abnormal cerebrovascular reactivity in patients with migraine and cluster headache.
mesh_terms: D000293:Adolescent; D000328:Adult; D002245:Carbon Dioxide / Q000494:pharmacology; D002560:Cerebrovascular Circulation; D003027:Cluster Headache / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000503:physiopathology*; D010100:Oxygen / Q000494:pharmacology; D014653:Vascular Headaches / Q000503:physiopathology*; D014661:Vasoconstriction / Q000187:drug effects; D014664:Vasodilation / Q000187:drug effects
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen