Phenytoin is a highly effective and widely prescribed anticonvulsant agent, but it can be associated with dose-related side effects and hypersensitivity reactions. We present a case of phenytoin-induced cholestatic hepatotoxicity in a 47-year-old woman who had exfoliative dermatitis, an increase in liver enzymes with a cholestatic pattern, and eosinophilia after 25 days of phenytoin therapy. The diagnostic workup showed no other possible causes, and the results of a percutaneous liver biopsy were consistent with drug-induced toxic hepatitis. Within 3 weeks after discontinuing phenytoin therapy, her liver function tests returned to normal values.
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Altuntaş et al. (2003) studied this question.
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