Co-morbid Allergic Rhinosinusitis in Pediatric Asthma: Prevalence, Severity, and Impact on Control

Abstract

Background: Asthma and allergic rhinosinusitis (ARS) are interrelated inflammatory 
airway diseases that often co-exist in children, reflecting the unified airway concept(1). 
Co-morbid ARS may exacerbate lower airway obstruction,