Elizabeth H. ThamAgnes S.Y. LeungPunchama PacharnSooyoung LeeMotohiro EbisawaBee Wah LeeGary W.K. WongTing Fan LeungSakura SatoLynette Pei Chi ShekKangmo AhnPakit VichyanondPantipa ChatchateeNarissara SuratannonNational Sagamihara HospitalNational University Hospital, SingaporeAjou University, School of MedicineYong Loo Lin School of MedicinePrince of Wales Hospital Hong KongFaculty of Medicine, Siriraj Hospital, Mahidol University2020-01-272020-01-272019-11-01Pediatric Allergy and Immunology. Vol.30, No.7 (2019), 681-68813993038090561572-s2.0-85074022343https://repository.li.mahidol.ac.th/handle/20.500.14594/51000© 2019 EAACI and John Wiley and Sons A/S. Published by John Wiley and Sons Ltd. The rapidly increasing prevalence of allergic disorders over the past 2 decades highlights the need to understand the epidemiology of anaphylaxis. In Europe, the United States, and Australia, the incidence of anaphylaxis is estimated to be between 60 and 950 cases per 100 000 population, with a lifetime prevalence of anaphylaxis of 0.05%-2%. The incidence appears to be increasing over time. Although the existing Asian literature is heterogeneous and limited by under-reporting, it also suggests a similar increasing trend in anaphylaxis incidence in Asia. Anaphylaxis triggers in Asia, such as the predominance of shellfish and wheat in older children and adolescents, differ from those seen in Western populations. Triggers unique to Asia such as traditional Chinese medications, galacto-oligosaccharides, and food delicacies have also been reported. Low usage of adrenaline as first-line treatment of anaphylaxis is evident across all countries and is particularly concerning. There is a need to establish prospective, standardized protocols for anaphylaxis data collection and reporting, to enhance the collective understanding of anaphylaxis and its burden, gaps in management and to identify areas for future research and intervention in each region. Understanding of the underlying reasons explaining the difference between East and West will facilitate future primary preventive strategies.Mahidol UniversityImmunology and MicrobiologyMedicineReviewSCOPUS10.1111/pai.13098