title: Bilateral Horner's syndrome in cluster type headaches.
abstract: A patient with cluster type headaches demonstrated bilateral and alternating ocular sympathetic dysfunction during a spontaneous as well as a nitroglycerin-induced attack. Biochemical evaluation revealed postganglionic pupillary dysfunction on the symptomatic side and preganglionic pupillary dysfunction contralaterally. These findings defy a simple explanation regarding a central or peripheral origin of the oculocephalic sympathetic dysfunction.
authors.affiliation: Division of Neurology, Union Memorial Hospital, Baltimore, Maryland 21218.
authors.forename: R K
authors.initials: RK
authors.lastname: Khurana
mesh_terms: D003027:Cluster Headache / Q000175:diagnosis* / Q000503:physiopathology; D004292:Dominance, Cerebral / Q000502:physiology*; D006732:Horner Syndrome / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D007498:Iris / Q000294:innervation; D008297:Male; D008875:Middle Aged; D009460:Neurologic Examination; D005996:Nitroglycerin; D012025:Reflex, Pupillary / Q000502:physiology; D013564:Sympathetic Nervous System / Q000503:physiopathology
chemical_list: D005996:Nitroglycerin