Chronic cough is the primary symptom of two other conditions, although these can be more challenging to diagnose: cough-variant asthma and eosinophilic bronchitis. Both conditions inflame the airways.

Some asthma therapy appeared to be less effective in Black children living in areas with high levels of nitrogen dioxide (NO2).

One in every 10 kids in the United States has asthma, a chronic breathing condition that can affect nearly every part of ...