title: A case of allopurinol-induced fixed drug eruption confirmed with a lymphocyte transformation test.
abstract: Allopurinol is one of the causative drugs that induce fixed drug eruption (FDE). The lymphocyte transformation test (LTT) is a safe and reliable diagnostic procedure for drug allergy, but is reported to be rarely positive in patients with FDE. In the current case, we performed an LTT and successfully confirmed allopurinol as the offending drug. This case report suggests that an LTT should be an optional diagnostic tool for FDE or delayed reaction due to allopurinol.
authors.affiliation: Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Min-Hye
authors.initials: MH
authors.lastname: Kim
authors.forename: Eun-Jin
authors.initials: EJ
authors.lastname: Shim
authors.forename: Jae-Woo
authors.initials: JW
authors.lastname: Jung
authors.forename: Seong-Wook
authors.initials: SW
authors.lastname: Sohn
authors.forename: Hye-Ryun
authors.initials: HR
authors.lastname: Kang