BILATERAL HORNERS-SYNDROME IN CLUSTER TYPE HEADACHES

A patient with cluster type headaches demonstrated bilateral and alter nating ocular sympathetic dysfunction during a spontaneous as well as a nitroglycerin-induced attack. Biochemical evaluation revealed postga nglionic pupillary dysfunction on the symptomatic side and preganglion ic pupillary dysfunction contralaterally. These findings defy a simple explanation regarding a central or peripheral origin of the oculoceph alic sympathetic dysfunction.