A Case Report on a Unique Explanation for Headache With Ophthalmoplegia: The Tolosa-Hunt Syndrome

Tolosa-Hunt syndrome (THS) is an extremely rare disorder characterized by painful unilateral ophthalmoplegia triggered by idiopathic inflammation of the cavernous sinus affecting the third, fourth, and/or sixth cranial nerve. Corticosteroid therapy effectively improves THS symptoms; thus, early clinical suspicion and diagnosis are essential. We report the case of a 37-year-old patient who presented with left-sided eye pain and double vision for four days. Physical examination was significant for oculomotor, trochlear and abducent nerves palsies on the left eye with slow light reflex. Contrast-enhanced magnetic resonance imaging of the head displayed mild asymmetry of the cavernous sinus regions with fullness on the left side and focal lateral thickening, confirming the THS diagnosis. The patient's symptoms improved dramatically upon starting oral corticosteroid therapy.