A case of influenza vaccination induced Guillain Barré syndrome with normal cerebrospinal fluid protein and improvement on treatment with corticosteroids.

We report a case of a 62-y-old male developing an influenza vaccination induced Guillain Barré syndrome (GBS) showing all clinical and neuropathological symptoms of GBS except the characteristic elevation of protein levels in the cerebrospinal fluid. The patient improved under treatment with 100 mg prednisolone. In these cases the administration of corticosteroids might be considered as a treatment option as they might represent a subgroup of GBS with a different immunological response pattern.