1 Cough, expectoration and expectoration are common symptoms of allergic asthma, which are caused by airway inflammation and bronchospasm. As a precursor of asthma, it is usually dry cough, but when asthma attacks, cough and expectoration are relieved, mainly wheezing symptoms. At the end of asthma attack, bronchospasm and airway stenosis are relieved, and a large amount of respiratory secretions need to be discharged, mainly chronic cough at night. Allergic asthma can be diagnosed by lung function examination and inhalation provocation test.

2 Chest tightness, chest pain and asthma attack, patients may feel chest tightness and breathlessness. If the asthma attack is severe and lasts for a long time, chest pain may occur, which may be related to excessive fatigue and respiratory muscle strain. Sudden chest pain should consider the possibility of spontaneous pneumothorax.

Wheezing and dyspnea are the characteristic clinical manifestations of allergic asthma. After the premonitory symptoms of asthma, there are chest tightness, chest tightness, shortness of breath, dyspnea, and often sudden wheezing. Because allergic asthma is a kind of small airway spasm, there will be symptoms of expiratory dyspnea, with short inhalation time and long exhalation time, and patients feel that it is difficult to exhale, but some asthma patients feel that both inhalation and exhalation are difficult, and normal people do not particularly realize that they are breathing when resting.

It is very helpful for the future treatment and prevention of patients to correctly understand the symptoms of asthma. Patients should pay attention to take active preventive measures in their lives. After understanding the symptoms of the disease, if you find the symptoms of the disease, you should go to a regular hospital for standardized treatment in time, so as to stay away from the harm of the disease and embark on a healthy road as soon as possible.