• Paolo Ambrosetto, Francesca Nicolini, Matteo Zoli, Luigi Cirillo, Paola Feraco, and Antonella Bacci.
• Department of Diagnostic Imaging, Villalba Hospital, GVM, Care and Research, Italy.
• Cephalalgia. 2014 Oct 1; 34 (11): 914-9.

IntroductionThe International Classification of Headache Disorders classifies ophthalmoplegic migraine (OM) under "cranial neuralgias and central causes of facial pain." OM is diagnosed when all the following criteria are satisfied: A. At least two attacks fulfilling criterion B. B. Migraine-like headache accompanied or followed within four days of its onset by paresis of one or more of the III, IV and/or VI cranial nerves. C. Parasellar orbital fissure and posterior fossa lesions ruled out by appropriate investigations. In children the syndrome is rare and magnetic resonance (MR) shows strongly enhancing thickened nerve at the root entry zone (REZ).MethodThe authors review the literature focusing on pathogenesis theories.ResultsThe authors suggest that ischemic reversible breakdown of the blood-nerve barrier is the most probable cause of OM and to include MR findings in the hallmarks of the disease.ConclusionOM is the same disease in adulthood and childhood, even if in adults the MR imaging findings are negative. In the authors' opinion, OM should be classified as migraine.© International Headache Society 2014 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav.

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