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  • Title: Characteristics and Laboratory Findings of Food-Induced Anaphylaxis in Children: Study in an Asian Developing Country.
    Author: Nantanee R, Suratannon N, Chatchatee P.
    Journal: Int Arch Allergy Immunol; 2022; 183(1):59-67. PubMed ID: 34515144.
    Abstract:
    INTRODUCTION: Food allergy is the major cause of pediatric anaphylaxis. Characteristics and triggers may be different in different geographical regions. Studies focusing on food-induced anaphylaxis (FIA) in Asian developing countries are limited. Our study aimed to study characteristics of FIA in a tertiary care center in an Asian developing country. METHODS: Retrospective review of pediatric anaphylaxis admission and outpatient visit at a tertiary care hospital in Bangkok, Thailand during 2008-2018 was performed. Data regarding clinical presentation, place reaction occurred, time of onset, investigations (serum tryptase, specific immunoglobulin E, and skin test), treatment, and follow-up periods were collected. RESULTS: One hundred seventy-four anaphylaxis admission records of which 61 episodes of FIA were retrieved. Data from outpatients visit consisted of 17 patients. Most patients were male (76.7%). The median age was 7.1 years (interquartile range 1.9-12.4). The major causes of FIA were shrimp/shellfish (37%), wheat (15.1%), and cow's milk (11%). Food causing anaphylaxis varied according to age-group: infants had anaphylactic reactions to egg, wheat, and cow's milk, preschools to wheat and peanut, and older children to shrimp/shellfish. Cutaneous manifestations occurred in all patients, followed by lower respiratory tract symptoms (83.6%) and gastrointestinal symptoms (50.8%). There was no biphasic anaphylaxis reported. Elevated serum tryptase was found in only 4 patients (7%). CONCLUSION: Recognizing characteristics of pediatric FIA is crucial. The common causes of FIA in our study in Asian children were egg in infants, wheat and peanut in preschool children, and shrimp/shellfish in school-age children and adolescents. Skin manifestation presented in all patients with FIA.
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