RT Book, Section A1 Covar, Ronina A. A1 Fleischer, David M. A1 Cho, Christine A1 Boguniewicz, Mark A2 Hay Jr., William W. A2 Levin, Myron J. A2 Abzug, Mark J. A2 Bunik, Maya SR Print(0) ID 1172112862 T1 Allergic Disorders T2 Current Diagnosis & Treatment: Pediatrics, 25e YR 2020 FD 2020 PB McGraw-Hill Education PP New York, NY SN 9781260457827 LK accesspediatrics.mhmedical.com/content.aspx?aid=1172112862 RD 2024/10/07 AB Allergic disorders are among the most common problems seen by pediatricians and primary care physicians, affecting over 25% of the population in developed countries. In the most recent National Health and Nutrition Examination Survey, 54% of the population had positive test responses to one or more allergens. According to a recent National Center for Health Statistics survey, the prevalence of food and skin allergies has increased over the past decade; with prevalence in 2015 of 5.7% and 12%, respectively. While the prevalence of respiratory allergies has been stable, it is still the highest among children (10.1%). In children, asthma, allergic rhinitis, and atopic dermatitis have been accompanied by significant morbidity and school absenteeism, with adverse consequences for school performance and quality of life, as well as economic burden measured in billions of dollars. In this chapter, atopy refers to a genetically determined predisposition to develop IgE antibodies found in patients with asthma, allergic rhinitis, and atopic dermatitis.