The symptoms of allergic asthma are varied and can be typical or atypical. Typical asthma symptoms include episodic wheezing, severe wheezing, forced sitting or seated breathing, dry cough or mucous sputum that cannot be easily coughed up, or recurrent episodes of shortness of breath, cough, chest tightness, or even severe oxygen deprivation such as cyanosis of the lips. In general, the symptoms can be relieved by rest, self-treatment or treatment with asthma medication, etc. Severe cases can lead to a persistent state of asthma. Light symptoms can be relieved by removing allergens and applying short-acting bronchodilators, but most of them still need medication, mainly inhaled glucocorticosteroid-based treatment, which can be combined with bronchodilator treatment at the same time as inhaled glucocorticosteroid treatment. Atypical asthma, such as cough variant asthma, is mainly characterized by a cough that lasts for more than 2 months, with frequent attacks at night and in the early hours of the morning, and is aggravated by exercise, cold air, exposure to certain allergens, etc. The main manifestation is an irritating dry cough. This cough chest image is normal. Its treatment is the same as that of typical asthma, which is based on inhaled glucocorticoids. The alternative treatment is leukotriene receptor antagonists, and some cough variant asthma can achieve disease control by taking this drug orally Allergic asthma is a chronic disease with episodes of wheezing A common typical symptom of allergic asthma. Cough is the only or main manifestation of cough variant asthma, a type of bronchial asthma.