Bronchial asthma is a chronic inflammatory disease of the airways that causes periodic "attacks" of hyper responsiveness, mucosal edema, and mucus production. This inflammation ultimately leads to recurrent episodes of asthma symptoms: cough, chest tightness, wheezing and dyspnea.

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References:  DerSarkissian, Carol. “Bronchial Asthma Treatments, Symptoms, Causes, and More.” WebMD, WebMD, 11 Aug. 2019, www.webmd.com/asthma/guide/bronchial-asthma#:~:text=When people talk about bronchial,of breath, and chest tightness.