Patients with bronchial asthma often exhibit symptoms such as episodic coughing, chest tightness, and wheezing. These symptoms typically occur when the patient inhales allergens, cold air, or experiences respiratory infections. Additionally, during an asthma attack, symptoms such as chest tightness tend to worsen at night and when lying flat, whereas they tend to alleviate during the day and when the patient is sitting or standing up. There are also some special types of bronchial asthma. For instance, some asthmatic patients may only exhibit coughing without obvious symptoms of chest tightness, wheezing, or breathing difficulties, which is known as cough-variant asthma. Some patients may only experience chest tightness without obvious wheezing or coughing. Lung auscultation may not reveal any wheezing sound, but treatment with inhaled corticosteroids and bronchodilators is effective; this condition is known as chest tightness-variant asthma. (Medication use should be under the guidance of a professional doctor.)