Association Between Multiple Sclerosis and the Symptoms of Vertigo and Facial Nerve Palsy

Patients with vertigo and facial nerve palsy as initial symptoms are rarely diagnosed with multiple sclerosis. A 43-year-old woman presented to our department with symptoms of vertigo and right facial nerve palsy (Yanagihara 16-point system [total score, 40] or House- Brackmann grade IV [obvious facial weakness]). On the day of the visit, she presented with right eye abduction, left eye adduction, and complaints of diplopia. Based on magnetic resonance imaging findings, she was diagnosed with clinically isolated syndrome, which is an early manifestation of multiple sclerosis. She was treated with intravenous methylprednisolone. Otolaryngologists often suspect Hunt's syndrome in patients who present with facial nerve palsy combined with vertigo. However, herein, we report our experience with an extremely rare case of a patient with atypical nystagmus symptoms, eye movement disorder, and diplopia secondary to facial palsy and vertigo, who presented with a clinical course different from that of Hunt's syndrome.