Study Status: Completed
Recruit Status: Completed
Study Type: Observational
Official Title: To Delineate the Characteristics of Airway Inflammation and Bronchial Hyperresponsiveness in Rhinitic Children With or Without Asthma and Sought to Explore a Possible Pred
Brief Summary: This is a prospective observational study , to clarity the characteristics of airway inflammation, airway reactivity and airway resistance in rhinitic children with or without asthma and to explore the possible predictors in the progression of allergic rhinitis to asthma.