1.What is asthma? Asthma is a chronic inflammation of the airways involving a variety of inflammatory cells. This inflammation makes susceptible individuals airway hyperresponsive to various excitatory factors and causes airway constriction. It manifests clinically with recurrent episodes of wheezing, expiratory dyspnea, chest tightness or coughing, which often flare up or worsen at night and/or early in the morning, often with widespread variable reversible airflow limitation, and most patients can resolve on their own or with treatment. 2.There are many things that trigger asthma and each person’s reaction varies. The common ones are: (1) infection; (2) sudden changes in temperature or humidity; (3) mites; (4) exercise; (5) tension, excitement or strong emotions; (6) animal hair; (7) dust or smoke; (8) pollen, etc. 3, treatment advice: most asthma patients receive standardized treatment, the symptoms will soon be relieved, lung function will also be gradually improved. Tips for all asthma patients: Asthma is a chronic disease and many patients need long-term treatment. The development and change of the treatment plan, the reduction and discontinuation of medication should be carried out under lifetime guidance and should not be decided by oneself, otherwise it is likely to lead to the loss of the effect of the previous treatment and the aggravation of the disease. When the effect is unsatisfactory after a period of standardized treatment according to the treatment protocol recommended by experts, you should actively cooperate with your doctor to find out the causes, such as: whether you are continuously exposed to asthma triggers (allergens, chemicals in the environment, etc.), whether it is due to improper use of medication devices, whether it is combined with comorbidities that cause asthma refractory to treatment (rhinosinusitis, gastroesophageal reflux, obstructive sleep apnea syndrome, etc.), whether smoking or passive smoking, the presence of pharmacological factors (oral beta-blockers, oral angiotensin-converting enzyme inhibitors, antipyretic and analgesic drugs, etc.), and the presence of other diseases with asthma-like symptoms (e.g., allergic bronchopulmonary aspergillosis, allergic granulomatous vasculitis, etc.). Acute asthma attacks are usually triggered, and many patients suffer from self-directed changes in treatment regimen (reduction or discontinuation of asthma control medications). Other common causes include viral infections, exposure to triggers such as allergens, auditing patients for proper use of medications, inhalation devices, and peak flow meters after an acute asthma attack has resolved, finding triggers for acute attacks and developing measures to avoid exposure, and developing and adjusting a controlled treatment regimen to prevent another acute attack.