Small Fiber Neuropathy Triggered by COVID-19 Vaccination: Association with FGFR3 Autoantibodies and Improvement during Intravenous Immunoglobulin Treatment.

Multiple case series have demonstrated the emergence of small fiber neuropathy following acute coronavirus disease 2019 (COVID-19) infections. Further, one large case supports that the COVID-19 vaccine has been reported to result in small fiber neuropathy. We report a case of a patient with confirmed small fiber neuropathy post-COVID-19 vaccination with positive FGFR3 antibodies.