OCULAR SYMPATHETIC PALSY IN PERIODIC MIGRAINOUS NEURALGIA

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Abstract
Ocular sympathetic involvement occurred in 22% of the 50 cases of periodic migrainous neuralgia studied. These changes are usually found in middle-aged patients. The disturbance is related to the stimulation of pain-sensitive fibres by vascular dilatation. The fibers of the ocular sympathetic nerve lie in the sheath of the internal carotid artery and the involvement most likely occurs in the interosseous portion where the fibres might be damaged against the bony wall. Repeated dilatation may produce a permanent lesion.