TY - CHAP M1 - Book, Section TI - Asthma: Epidemiology A1 - Litonjua, Augusto A. A1 - Apter, Andrea J. A1 - Weiss, Scott T. A2 - Grippi, Michael A. A2 - Elias, Jack A. A2 - Fishman, Jay A. A2 - Kotloff, Robert M. A2 - Pack, Allan I. A2 - Senior, Robert M. A2 - Siegel, Mark D. PY - 2015 T2 - Fishman's Pulmonary Diseases and Disorders, 5e AB - Asthma is a clinical syndrome that affects 25 million Americans and accounts for 12.7 million medical visits yearly. One-third of those afflicted with asthma are children under the age of 18 years. It is estimated that roughly half of these children received their diagnosis prior to the age of 6 years. As a result, the origins of asthma are believed to have a clear genomic component that is often manifested in early childhood. The clinical course of this illness is influenced greatly by exposures, including respiratory viruses, indoor allergens, maternal tobacco smoke, and other physical and social aspects of the environment. Thus, this clinical disease has important consequences in childhood and may have important consequences for adult obstructive lung disease. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/19 UR - accessmedicine.mhmedical.com/content.aspx?aid=1122359293 ER -