Myelopathy following influenza vaccination in inflammatory CNS disorder treated with chronic immunosuppression.

We report a patient who developed a transverse myelitis with Brown-Séquard syndrome following a prophylactic influenza vaccination, despite being chronically immunosuppressed for a steroid-responsive optic neuropathy. Although influenza vaccination is recommended in patients receiving chronic immunosuppression, its use may on occasion be associated with neurological complications previously reported in immunocompetent individuals.