title: Pearls and Pitfalls in Diagnosing IgE-Mediated Food Allergy.
abstract: The term "food allergy" is used by many patients and clinicians to describe a range of symptoms that occur after ingestion of specific foods. However, not all symptoms occurring after food exposure are due to an allergic, or immunologic, response. It is important to properly evaluate and diagnose immunoglobulin E (IgE)-mediated food allergy as this results in reproducible, immediate onset, allergic reactions that can progress toward life-threatening anaphylaxis. Proper diagnosis requires understanding of the common foods that cause these reactions in addition to key historical elements such as symptoms, timing and duration of reaction, and risk factors that may predispose to development of IgE-mediated food allergy. Diagnostic testing for food-specific IgE can greatly aid the diagnosis. However, false-positive test results are very common and can lead to overinterpretation, misdiagnosis, and unnecessary dietary elimination. This review discusses important aspects to consider during evaluation of a patient for suspected IgE-mediated food allergy.
authors.affiliation: Department of Pediatrics, Section of Allergy and Immunology, Nationwide Children's Hospital and The Ohio State University College of Medicine, 700 Children's Drive, Columbus, Ohio, 43205, USA. David.stukus@nationwidechildrens.org.
authors.forename: David R
authors.initials: DR
authors.lastname: Stukus
authors.affiliation: Department of Pediatrics, Section of Allergy and Immunology, Nationwide Children's Hospital and The Ohio State University College of Medicine, 700 Children's Drive, Columbus, Ohio, 43205, USA.
authors.forename: Irene
authors.initials: I
authors.lastname: Mikhail
mesh_terms: D000485:Allergens / Q000276:immunology; D000707:Anaphylaxis / Q000276:immunology; D005512:Food Hypersensitivity / Q000175:diagnosis / Q000276:immunology*; D006801:Humans; D007073:Immunoglobulin E / Q000276:immunology*; D010808:Physical Examination; D012008:Recurrence
chemical_list: D000485:Allergens; D007073:Immunoglobulin E
keywords: Anaphylaxis; Food allergy; Immunoglobulin E; Skin prick testing; Urticaria