• J Formos Med Assoc · Aug 2022

    Analysis of severe cutaneous adverse reactions (SCARs) in Taiwan drug-injury relief system: 18-year results.

    • Po-Wei Huang, Mu-Han Chiou, Mei-Yi Chien, Wen-Wen Chen, and Chia-Yu Chu.
    • Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
    • J Formos Med Assoc. 2022 Aug 1; 121 (8): 1397-1405.

    Background/PurposeTaiwan Drug-Injury Relief System (TDRS) has been implemented since 1999. More than 60% of the approved applications were associated with severe cutaneous adverse reactions (SCARs). Studies assessing SCARs using real-world evidence are very limited. TDRS offers abundant case information as a source of real-world evidence to investigate the characteristics of SCARs in Taiwan. The purpose of this study is to understand the trends and characteristics of SCARs in Taiwan.MethodsApplications from Drug-Injury Relief Database (TDRD) from 1999 to 2016 were retrospectively analyzed.ResultsA declining trend in SCARs application was noticed after 2012, and 952 applications of SCARs were identified. The most common subtypes of SCARs were SJS/TEN (n = 455/206), DRESS (n = 228), GBFDE (n = 34) and AGEP (n = 18). The most common culprit drugs were allopurinol, carbamazepine, phenytoin, diclofenac and lamotrigine for SJS/TEN; allopurinol, phenytoin, co-trimoxazole, carbamazepine and phenobarbital for DRESS; mefenamic acid for GBFDE; non-steroidal anti-inflammatory drugs (NSAIDs) and beta-lactam antibacterials for AGEP. The proportions of mortality cases were 28.9% for SJS/TEN; 36% for DRESS; 11.8% for GBFDE and 5.6% for AGEP. The mean latent period of SJS/TEN, DRESS, GBFDE and AGEP were 21.8 days, 29.2 days, 3.3 days and 6.7 days, respectively.ConclusionThe approved drug-injury relief applications associated with SCARs were mainly SJS, TEN and DRESS. The most common culprit drugs were antiepileptics, antibacterials, antigout agents, and NSAIDs. The latent periods showed some distinct features for different types of SCARs. In light of the high mortality rate, public awareness and vigilance of SCARs are crucial for the patient safety.Copyright © 2021 Formosan Medical Association. Published by Elsevier B.V. All rights reserved.

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