Guillain-Barré syndrome (GBS) and its variants are parainfectious (2/3 cases) neurological illness involving the lower motor neuron but they can also involve central nervous system (CNS). Bickerstaff brainstem encephalitis (BBE) Miller Fisher (MFS) two of GBS with CNS involvement. The present case series highlights variable presentation laboratory findings in BBE MFS, which may help clinicians ...