Abstract
The links between the upper and lower airways were clinically noted in the early 1800s. The interactions between the two were a focus of the Allergic Rhinitis and its Impact on Asthma (ARIA) initiative done in collaboration with WHO.1 After this initiative, a new classification for allergic rhinitis was proposed that takes into account the number of days a week and consecutive weeks a year for which a patient has symptoms. The terms intermittent rhinitis and persistent rhinitis were proposed to replace seasonal allergic rhinitis and perennial allergic rhinitis, respectively.
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