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A 22-year-old man presented with progressive gait instability,tremor,and dysarthria since childhood.Electrophysiologic studies revealed a sensorimotor polyneuropathy.Laboratory studies documented vitamin E deficiency;however,no gastrointestinal,hepatic,or lipoprotein disorder could be identified.Vitamin E therapy normalized the serum level,but there was no neurologic improvement.Isolated vitamin E deficiency,in the absence of lipid malabsorption,should be considered in the evaluation of children and adults with ataxia and peripheral neuropathy. |
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