Variant asthma mainly emphasizes that asthma attacks behave differently from typical asthma, such as coughing and chest tightness, while allergic asthma refers to the occurrence of asthma related to allergies. 1. Variant asthma: Typical asthma attacks are characterized by wheezing and dyspnea, while variant asthma is characterized by coughing and chest tightness, which are known as cough-variant asthma and chest-tightness-variant asthma, respectively. 2. Allergic asthma: refers to asthma attacks accompanied by typical allergic reactions, such as patients tend to have asthma attacks after contact with pollen, dust mites and other allergens, there will be wheezing, dyspnea and other typical asthma manifestations. It is recommended that patients clarify the type of asthma under the guidance of the doctor, so as to do a good job of prevention and avoid asthma attacks.