Recurrent Fisher's syndrome with immunological abnormalities and replicated laterality.

A case of Fisher's syndrome which recurred 10 years apart was reported. Laterality of cranial nerve findings in the initial episode was replicated in the recurrence. Some kind of localized immune sensitization is supposed to play a role in replicating such a laterality. Increased CD4/CD8 ratio and elevated IgE were noted, which suggests immunological behavior in Fisher's syndrome similar to that in Guillain-Barré syndrome.