title: Iris adrenergic impairment in idiopathic headache.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003027:Cluster Headache / Q000503:physiopathology*; D005260:Female; D006801:Humans; D007498:Iris / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000503:physiopathology; D009474:Neurons / Q000503:physiopathology*; D011941:Receptors, Adrenergic / Q000502:physiology*; D014653:Vascular Headaches / Q000503:physiopathology*
chemical_list: D011941:Receptors, Adrenergic