Bronchial asthma is a heterogeneous disease characterized by chronic airway inflammation involving a variety of cells (such as Eosinophils, Mast cells, T lymphocytes, neutrophils, airway epithelial cells, etc.) and cell components. This chronic inflammation is associated with airway hyperresponsiveness.
Generally, extensive and variable reversible expiratory airflow restriction occurs, leading to repeated wheezing, shortness of breath, chest tightness, and/or cough, The intensity changes over time. It often occurs and worsens at night and/or in the morning, and most patients can alleviate it on their own or through treatment. If the diagnosis and treatment of bronchial asthma is not timely, the Irreversible process of airway narrowing and airway remodeling may occur with the prolongation of the course of the disease.
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