Vanishing bile duct syndrome arising in a patient with HIV infection sequentially treated with trimethoprim/sulfamethoxazole and dapsone.

Trimethoprim/sulfamethoxazole is well known to cause intra-hepatic cholestasis which in rare instances can be prolonged and lead to vanishing bile duct syndrome. The risk regarding the potential for cross-reactivity between structurally related molecules such as dapsone and trimethoprim/sulfamethoxazole in causing hepatotoxicity is scarce. Herein, we report a case of vanishing bile duct syndrome following dapsone use in a patient with HIV infection and a recent history of trimethoprim/sulfamethoxazole-induced cholestasis. The patient had severe and protracted cholestasis during 2 years of follow-up and eventually died of liver failure.