Patch Testing in Gastrointestinal Diseases – A Systematic Review of the Patch Test (PT) and Atopy Patch Test (APT)

Abstract

Food allergy is common and the prevalence is increasing. The pathogenesis of food allergy has been extensively reviewed. Immunologic and clinical tolerance to food requires production of regulatory T cells that are food-antigen specific. Loss of tolerance to food can lead to IgE-mediated reactions and non-IgE-mediated reactions.

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