<prompt> A young runner with history of seasonal running nose, complains of sudden onset dyspnea early morning that improved after 2-3 hours. He has history of similar episodes in the past.on examination, patient is tachypneic, diffuse polyphonic expiatory wheeze heard on auscultation of chest, His x-ray is normal. All except one is true regarding the clinical scenario.Diffusion Lung capacity for carbon monoxide is NormalFEV1 is decreasedNecrosis of airwaysMicrovascular leakage resulting in airway edema.and plasma exudation into airway lumen  <response>: Clinical features are suggestive of Bronchial Asthma. There is no necrosis of airway in Bronchial Asthma. 