We describe a patient who had four relapses of Miller Fisher syndrome over a period of 20 years. The classical triad - ophthalmoparesis, ataxia and areflexia - was present during the first two attacks; ataxia was not observed during the third episode. The final recurrence was characterized by signs suggestive of a central involvement of the oculomotor pathways, subclinical slowing of the visual-evoked potentials, and peripheral vestibular hyporeactivity. Brain imaging was normal, but high levels of anti-GQ1b IgG antibodies were detectable during the second relapse and persisted after the fourth recurrence despite complete clinical recovery.
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