Cough and Eosinophilia

Publication date: July–August 2019Source: The Journal of Allergy and Clinical Immunology: In Practice, Volume 7, Issue 6Author(s): Sarah Diver, Richard J. Russell, Christopher E. BrightlingEosinophilic airway inflammation is observed in 30% to 50% of chronic cough sufferers. It is a common feature of asthma and upper airway cough syndrome, and it is required in the diagnosis of nonasthmatic eosinophilic bronchitis. Our understanding of the mechanisms underlying allergic and nonallergic eosinophilic inflammation have evolved tremendously in the last 2 decades, but the cause of this inflammation in any individual is often uncertain. Inhaled corticosteroids are the mainstay therapy for cough due to asthma or nonasthmatic eosinophilic bronchitis, and response is related to the presence of biomarkers of eosinophilic airway inflammation. In upper airway cough syndrome, nasal topical corticosteroids are beneficial in allergic rhinitis and chronic rhinosinusitis with polyposis. This review will describe the diagnosis, current and possible future treatments, and prognosis of chronic cough in adults with eosinophilic inflammation.

Source: The Journal of Allergy and Clinical Immunology: In Practice - July 3, 2019 Category: Allergy & Immunology Source Type: research