Background Little is known regarding mechanistic and phenotypic variations between cough variant asthma (CVA), presenting having a chronic cough as the sole sign that responds to bronchodilators, and classic asthma with wheezing during methacholine inhalation. less reactive to inhaled methacholine and wheezed less regularly but coughed more frequently during methacholine-induced bronchoconstriction than did patients with… Continue reading Background Little is known regarding mechanistic and phenotypic variations between cough