A patient developed marked cerebellar atrophy after a single suicidal intoxication with 7 grams phenytoin. The clinical signs of cerebellar dysfunction subsided very slowly and incompletely within 18 months. We documented the cerebellar atrophy by CTs 4 weeks and 1 year after the intoxication, and we suggest that a single severe acute intoxication with phenytoin may directly cause cerebellar degeneration.
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Masur et al. (1989) studied this question.
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