Clinical symptoms: patients exposed to allergens can be diagnosed with variant asthma through the following aspects: clinical symptoms, patients exposed to allergens, such as pollen, dust, dust, paroxysmal cough, asthma, and dyspnea. Rest or take antiasthmatic drugs, such as theophylline, leukotriene receptor antagonists, and symptoms can be relieved. Symptoms of cough, chest tightness and asthma caused by lung infection, tuberculosis, lung tumor and other diseases excluded by chest X-ray or lung CT. Bronchial dilation test or bronchial provocation test were mostly positive. Allergen detection can sometimes find allergens. Through the above points, variant asthma can be diagnosed.
