A generalized allergic reaction with acute interstitial nephritis following trimethoprim-sulfamethoxazole use

A severe generalized multisystem allergic reaction occurred in a 16-month-old infant following the use of trimethoprim-sulfamethoxazole. Acute interstitial nephritis developed three weeks following the onset of this reaction and resolved after three months. This is the first description of this renal toxicity with TMP-SMX in a child.