Anaphylaxis and Mast Cell Disorders.

Theo Gülen, Cem Akin

Immunology and allergy clinics of North America 2022 Feb

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There is strong evidence of an association between severe anaphylaxis, especially hymenoptera venom induced, and mast cell (MC) disorders. It has been thought that intrinsic abnormalities in MCs, including the presence of the activating KIT D816V mutation in mastocytosis or of genetic trait, hereditary alpha-tryptasemia, may influence susceptibility to severe anaphylaxis. This article evaluates the potential mechanisms leading to severe MC activation, as well as the differential diagnosis of and range of symptoms attributable to MC mediator release. Also, we offer a global classification for disorders related to MC activation. Copyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved.