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    There is no defined standard of care around tree nut introduction in a peanut-allergic child, and the role of screening prior to tree nut introduction is controversial. There is some evidence that peanut-allergic children are at increased risk of tree nut allergy, with approximately 23-68% of children with co-existent peanut/tree nut allergy. In some studies, it has been shown that tree nut allergy in children has the potential to be a severe allergy. However, this appears to be age-specific as infant anaphylaxis in general tends to be milder, and there has been no fatality reported on the first ingestion of an allergen in infancy. Familial hesitancy has been identified as a possible condition for undertaking screening tests prior to allergen introduction. Indeed, there has been limited evidence that caregiver hesitancy may exist in peanut-allergic families with tree nut introduction. However, pre-emptive screening has the potential to overdiagnose tree nut allergy and delay introduction (which could paradoxically increase risk). As a result, the decision is best made in the context of shared decision-making and patient preference-sensitive care. © 2021 EAACI and John Wiley and Sons A/S. Published by John Wiley and Sons Ltd.


    Elissa M Abrams, Scott H Sicherer. Tree nut introduction in a peanut-allergic child: To eat, to screen, or to avoid? Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology. 2022 Jan;33(1):e13669

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    PMID: 34553798

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