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A 31-year-old woman presented to the ED with a loss of taste and smell of 2 months’ duration and a frontal headache, bilateral facial numbness, photophobia, and horizontal diplopia that was worse with far vision of 2 weeks’ duration. A review of systems revealed mild nausea and decreased appetite without weight loss. She denied any cardiopulmonary symptoms, specifically no cough or shortness of breath. Her medical history was notable for arthralgias. The patient was diagnosed with ankylosing spondylitis, for which she had been taking etanercept for several months. She consumed minimal alcohol and had no history of tobacco or drug use or recent travel. Her family history was unremarkable.