IGHE and eosinophilic esophagitis: Non-IgE FA, such as food protein-induced enterocolitis syndrome (FPIES), food protein-induced allergic proctocolitis (FPIAP) or eosinophilic esophagitis (EoE), primarily affects the gastrointestinal tract and can be acute (FPIES) or chronic (FPIES, FPIAP, EoE) (11).