Clinical features and airway inflammation in mild asthma versus asymptomatic airway hyperresponsiveness

We still do not know why some subjects with airway hyperresponsiveness (AHR) experience no respiratory symptoms.Our aim was to compare pulmonary function, perception of bronchoconstriction, and airway inflammation in atopic subjects with mild recently diagnosed (<5 years, n=30) or longer-standing (5 years or more, n=30) symptomatic asthma in comparison with atopic subjects with asymptomatic AHR (n=27).All subjects had measurements of expiratory...