Trends in hospitalizations related to anaphylaxis, angioedema and urticaria in the United States

Allergic disorders are a common clinical disorders with high rates of health care usage.1 Studies from developed countries have suggested an increasing prevalence of allergic diseases. 2–4 However, the data on the epidemiology of anaphylaxis, angioedema and urticaria are limited, with only small cohort studies available. 1,4 Recent studies from the United Kingdom (UK) and Australia have noted marked increase in hospitalizations related to urticaria, angioedema and anaphylaxis.1,4 Epidemiological study and incidence data of these conditions, however, depend on several factors, including diagnostic criteria used, variation in patient surveys, disease incidence in the general population and also diagnostic awareness among physicians.

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