TY - CHAP M1 - Book, Section TI - Allergic Gastroenteropathies and Eosinophilic Gastrointestinal Diseases A1 - Nguyen, Nathalie A1 - Furuta, Glenn T. A2 - Kline, Mark W. PY - 2018 T2 - Rudolph's Pediatrics, 23e AB - Adverse reactions to foods are classified into 3 categories: food anaphylaxis, food hypersensitivity, and food intolerance. Anaphylaxis and hypersensitivity involve allergic mechanisms, whereas intolerance is a reproducible nonallergic response. Allergic food reactions may be broadly divided into immunoglobulin (Ig) E–mediated (eg, anaphylaxis) or non–IgE-mediated (eg, celiac). Food anaphylaxis is an IgE-mediated reaction of rapid onset (within minutes) and includes classic anaphylaxis and oral allergy syndrome. Food hypersensitivity includes immunologic reactions that are typically delayed and cell-mediated with or without IgE antibody involvement including food protein-induced enterocolitis syndrome (FPIES), food protein-induced proctocolitis, and celiac disease. Food intolerance represents an abnormal, nonallergic physiologic response including idiosyncratic (monosodium glutamate), metabolic (galactosemia), digestive (lactase deficiency), pharmacologic (caffeine), toxic (Bacillus cereus), organ based (irritable bowel syndrome), or behavioral (food texture aversion) reactions. Food allergic gastroenteropathies are characterized by common gastrointestinal (GI) symptoms that occur with ingestion of food allergens. The 2 most common allergic GI diseases are allergic proctocolitis (AC) and FPIES. Since the clinical phenotype of patients with AC and FPIES are so distinct, GI mucosal biopsies are typically not necessary to make these diagnoses. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/19 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1182908565 ER -