Vieira, JPCastro, JGomes, LBJacinto, SDias, AI2015-11-132015-11-132008-10Headache 2008;48:1372-1376http://hdl.handle.net/10400.17/2342Ophthalmoplegic migraine (OM) is a childhood disorder of uncertain etiology manifesting recurrent unilateral headache associated with a transitory oculomotor (usually IIIrd nerve) palsy. Recent publications emphasize the finding on MRI of contrast enhancement in the IIIrd nerve suggesting that OM may be a recurrent inflammatory neuropathy. We report the case of a 7-year-old boy with typical symptoms of this disorder. Angio MR and Angio CT revealed the presence of an infundibular dilatation of a perforating branch of the posterior cerebral artery adjacent to the symptomatic IIIrd nerve. We speculate that this and perhaps other cases of OM may have a different pathophysiology related to compression of the IIIrd nerve by an adjacent vascular structure that could activate the trigeminovascular system and produce migrainous pain.engCerebral Arterial Diseases/complicationsCerebral Arterial Diseases/radiographyDilatation, Pathologic/complicationsFlunarizine/therapeutic useMigraine Disorders/drug therapyMigraine Disorders/etiologyOculomotor Nerve Diseases/complicationsOculomotor Nerve Diseases/radiographyPrednisone/therapeutic useVasodilator Agents/therapeutic useChildHDE NEU PEDjournal article10.1111/j.1526-4610.2008.01179.x