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Published on: May 29, 2020
Late-onset acetaminophen-induced allergic hepatitis with progression to chronicity
Masako Mishima-Iwai1, Ken Takahashi1, Masataka Yokode1
1Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
Abstract:
Acetaminophen (paracetamol), a widely used antipyretic/analgesic, is a well-known agent causing acute hepatic injury. Whereas most cases are caused by its intrinsic hepatotoxicity, idiosyncratic hepatitis by the allergic mechanism is extremely rare. We herein report a case of late-onset acetaminophen-induced allergic hepatitis with progression to chronicity. This unique case extends the spectrum of acetaminophen-induced liver injury. Clinicians should be aware of this unusual clinical manifestation. The mechanism underlying the immunological reaction to acetaminophen remains to be elucidated.
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