Hepatic Injury in a Child Caused by Trimethoprim-Sulfamethoxazole

Abstract
Trimethoprim-sulfamethoxazole was given to a 16-year-old boy as prophylaxis for a urinary tract infection. He developed severe cholestatic hepatitis 41 days after administration of the drug. A liver biopsy specimen showed a mixed inflammatory infiltrate in the portal triads and prominent bile stasis. The clinical course in this patient supports the concept of an indirect hypersensitivity reaction to sulfamethoxazole.

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