Acute-Onset Chronic Inflammatory Demyelinating Polyradiculoneuropathy Mimicking Miller-Fisher Syndrome

A 77-year-old man developed diplopia, gait ataxia, and paresthesia. A clinical examination also revealed ophthalmoplegia, facial palsy, ataxia of the limbs and trunk, and reduced deep tender reflexes. Laboratory and electrophysiological studies revealed albuminocytological dissociation and demyelination. He was diagnosed as Miller-Fisher syndrome and received intravenous immunoglobulin therapy. His clinical symptoms deteriorated at 12 weeks after onset. We diagnosed acute-onset chronic inflammatory demyelinating polyradiculoneuropathy, and which the patient recovered from following corticosteroid therapy. J Korean Neurol Assoc 33(3):196-200, 2015