Clinical manifestations of bronchial asthma

Written by Yuan Qing
Pulmonology
Updated on May 25, 2025
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Bronchial asthma, commonly known as asthma, involves chronic airway inflammation of the bronchi with the participation of various chronic inflammatory cells. Patients primarily exhibit symptoms such as episodic wheezing, breathlessness, chest tightness, and coughing. These symptoms usually occur in the early morning and at night, and can improve on their own or with medication. Generally, the occurrence of bronchial asthma is related to genetic factors and contact with allergens, with most patients having some genetic predisposition. Once bronchial asthma develops, it is advisable to avoid allergens, such as pollen, dust mites, pet dander, etc. Generally speaking, the prognosis for bronchial asthma is very good.

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Written by Hao Ze Rui
Pulmonology
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Does a nebulizer work for bronchial asthma?

For patients with bronchial asthma, nebulization treatment is useful during an asthma attack. During an attack, symptoms such as wheezing and difficulty breathing tend to occur. Typically, nebulizing corticosteroids or bronchodilators can have anti-inflammatory, antispasmodic, and asthma-relieving effects, thus improving symptoms like breathing difficulties in asthma patients. Moreover, the method of nebulized inhalation can take effect quickly, swiftly alleviating the patient's symptoms.

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Written by Yuan Qing
Pulmonology
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Is oxygen inhalation useful for bronchial asthma?

Administering appropriate oxygen therapy can have certain benefits for patients with bronchial asthma. The onset of bronchial asthma is mainly due to the edema of the bronchial mucosa and the constriction of the smooth muscles outside the bronchi leading to the narrowing of the lumen. This makes it difficult for gases to pass normally through the airway into the alveoli. Patients may experience symptoms such as coughing, chest congestion, breathlessness, or wheezing, which are primarily due to the pathophysiology of bronchial asthma. Of course, providing patients with appropriate oxygen therapy during an asthma attack can be beneficial, temporarily solving the problem of hypoxia. However, it is important to understand that asthma patients are not primarily suffering from a lack of oxygen but from ventilation dysfunction, which leads to the inability to expel carbon dioxide, the waste gas, from the body. Therefore, the fundamental treatment should focus on improving airway spasms and narrowing to enhance ventilation.

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Written by Yuan Qing
Pulmonology
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Is bronchial asthma airflow limitation reversible?

The airflow limitation in bronchial asthma is completely reversible, which is related to the pathophysiological mechanisms involved in the occurrence of bronchial asthma. Bronchial asthma is a chronic airway inflammation involving multiple inflammatory cells. When this airway inflammation occurs, there can be edema of the airway mucosa as well as spasm and contraction of the smooth muscles outside the bronchi. However, this inflammation and smooth muscle spasm are reversible through medication or spontaneous improvement. Thus, many patients with mild asthma can achieve symptom relief without medication. In the case of some severe patients, even though the airflow is restricted, it can be reversed with the use of medications, and generally, the recovery is very quick.

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Written by Han Shun Li
Pulmonology
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Does bronchial asthma spread?

In some families or among relatives, multiple people may have bronchial asthma. If multiple members suffer from bronchial asthma, is it because they have infected each other? Actually, that's not the case. Bronchial asthma is not contagious. The reason why multiple family members or relatives have bronchial asthma is due to genetics. The closer the familial ties of asthma patients, the higher the incidence of the disease. The more severe the patient's condition, the higher the incidence among their relatives. Therefore, asthma is related to genetics but is not contagious.

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Written by Wang Chun Mei
Pulmonology
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Do you need to take anti-inflammatory drugs for bronchial asthma?

Bronchial asthma is a very common asthmatic disease in clinical settings. There are numerous and complex factors that cause bronchial asthma. Therefore, in cases of bronchial asthma caused by bacterial infection leading to symptoms such as cough, phlegm, respiratory distress, and breathlessness, it is necessary to use appropriate anti-inflammatory drugs to alleviate these clinical discomforts. If the bronchial asthma is triggered by physical or chemical irritants, such as pollen, mites, animal dander, or harmful gases, leading to varying degrees of cough, breathlessness, respiratory distress, and chest tightness, anti-inflammatory drugs are generally not required. Instead, avoiding triggering factors and providing appropriate medication to relieve bronchial spasms can quickly control the asthma symptoms caused by bronchitis.