Asthma is also known as bronchial asthma. Bronchial asthma is a chronic inflammatory disease of the airways involving a variety of cells and cellular components. This inflammation is often accompanied by increased airway reactivity, resulting in recurrent episodes of wheezing, shortness of breath, chest tightness and/or coughing, mostly at night and/or in the early morning hours, which are often accompanied by widespread and variable airflow obstruction that can be reversed on its own or with treatment. What should I look for when diagnosing asthma? 1. Some young children whose initial symptom of onset is a recurrent or persistent cough, or wheezing in the presence of a respiratory infection, are often misdiagnosed as bronchitis or pneumonia (including acute respiratory infection-ARI) and given ineffective antibiotic or cough suppressant therapy. At this time, giving anti-asthma medication is beneficial and helps diagnose asthma in infancy, so infants and children with the above characteristics can still extend the diagnostic name of infantile asthma. 2.If the patient’s cold repeatedly “develops into the lungs”, or lasts for more than 10 days before recovery, or improves only after treatment with anti-asthmatic drugs, then asthma should be considered. 3.If treatment according to asthma is not satisfactory, bronchial foreign body, bronchial lymph node tuberculosis, congenital upper and lower airway malformation, cardiogenic asthma and other diseases that can have wheezing, shortness of breath or chest tightness should be excluded.