What is “cough variant asthma” in children? Every day, children come to the pediatric clinic with a cough. Parents report that their children have been coughing for more than a month, mostly at night or in the early hours of the morning, with paroxysmal coughing, no shortness of breath or fever, and no significant abnormalities on chest X-ray or blood tests. In the past, these children were often diagnosed as “cold” or “bronchitis”. In recent years, with the study of these children, scholars at home and abroad found that these children may have allergic cough, clinically known as “cough variant asthma”, which is an insidious asthma with cough as the main clinical manifestation, and the prevalence of which is increasing year by year in children, with about 30% of “cough variant asthma”. About 30% of children with “cough variant asthma” may develop into clinically typical bronchial asthma. Current data show that the incidence of allergic cough is higher in industrialized cities and developed coastal areas than in other regions, indicating that the environment has a significant impact on allergic cough. Cough variant asthma, also known as allergic cough, is a specific manifestation of asthma, mainly characterized by persistent or recurrent coughing attacks for more than one month, often accompanied by nocturnal or early morning episodes of coughing with little sputum, aggravated by exercise, without clinical manifestations of infection, or after prolonged antibiotic treatment is ineffective, and treatment with bronchial Treatment with bronchodilators can relieve coughing attacks, often with personal or family allergies. The main characteristics of cough variant asthma are: 1. persistent or recurrent cough attacks for more than a month, often with episodes of coughing at night or in the early morning, aggravated by exercise, with little sputum; 2. laboratory tests or other examinations showing no obvious signs of infection or ineffective after prolonged antibiotic treatment; 3. coughing attacks relieved by bronchodilators; 4. personal history of allergy, i.e., with eczema, urticaria, allergic rhinitis, or allergic rhinitis. 5. Exercise, cold air, allergens or viral infections can trigger cough attacks; 6. Cough is seasonal, mostly in spring and autumn and recurrent; 7. Chest X-ray shows normal or increased lung texture but no other organic changes. 8. The disease is caused by hereditary allergies to the environment. Parents should be alert to “cough variant asthma” when they find that their child’s cough meets most of the above characteristics, and should promptly take their child to a pediatric clinic for standardized diagnosis and treatment under the proper guidance of a doctor.