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 Wang Xiang Yu
Pulmonology
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Is bronchial asthma contagious?

Is bronchial asthma contagious? Bronchial asthma is not contagious; it is not an infectious disease. The exact causes of bronchial asthma are not very clear, primarily thought to be related to genetic and environmental factors. Bronchial asthma has a close relationship with genetics, meaning that if parents have asthma, their children and grandchildren might also develop bronchial asthma. The closer the familial relationship, the higher the chances of developing bronchial asthma compared to the general population. This genetic pattern can create the illusion to the general public that bronchial asthma is contagious, but it may be more closely related to genetics.

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Written by Han Shun Li
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How to cure bronchial asthma completely?

Bronchial asthma is mainly characterized by recurrent symptoms of chest tightness, wheezing, breathing difficulties, and coughing, which often cause significant distress to patients. So, is it possible to completely cure bronchial asthma, and are there any methods for a complete cure? Unfortunately, at present, bronchial asthma cannot be completely cured and there are no specific treatments for it. The main goal of current treatments is to control symptoms with asthma medications, prevent worsening of the condition, maintain normal lung function as much as possible, and preserve the patient's normal work and life capabilities, while also minimizing adverse drug reactions.

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Written by Yuan Qing
Pulmonology
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Bronchial asthma X-ray manifestations

Bronchial asthma is primarily caused by inflammation in the airways due to various inflammatory cells, leading to the narrowing and spasm of the bronchi. This impedes the effective expulsion of gases from the lungs through the bronchi, resulting in a disease characterized by symptoms such as wheezing, shortness of breath, chest tightness, and coughing. In patients with bronchial asthma, because of a large amount of gas remaining in the lungs, X-ray manifestations primarily include sparse lung markings, increased translucency, as well as some signs of widened intercostal spaces and lowered diaphragm. Generally, these signs are not specific and cannot be solely relied upon to diagnose or exclude bronchial asthma. It is also necessary to consider the patient's medical history and lung function tests for a comprehensive assessment.

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Written by Zeng Xiang Bo
Respiratory and Critical Care Medicine
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How to check for bronchial asthma?

If there is a suspicion of having bronchial asthma, a series of tests will be carried out at the hospital, mainly including: First, complete blood count, especially focusing on whether there is an increase in eosinophils, to determine the presence of eosinophilic allergic inflammation. Second, imaging of the lungs, including chest X-ray or CT to determine whether there are any specific lesions in the lungs. Third, pulmonary ventilation function and bronchodilation tests, or bronchial provocation tests. Pulmonary function is a gold standard for diagnosing bronchial asthma, often indicating the presence of obstructive ventilation dysfunction. A positive bronchodilation test or provocation test can help in confirming bronchial asthma.

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Written by An Yong Peng
Pulmonology
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Can people with bronchial asthma eat persimmons?

Patients with bronchial asthma can generally eat persimmons, as bronchial asthma is not a contraindication to eating persimmons. However, it should also be noted that some patients with bronchial asthma may have a highly sensitive constitution and may be allergic to various foods and fruits. For instance, in rare cases, some patients with bronchial asthma may be allergic to persimmons, and eating them can lead to rashes, itchy skin, or even worsen symptoms such as chest tightness. If a patient with bronchial asthma has a confirmed allergy to persimmons, then they should avoid eating them. Additionally, patients with bronchial asthma need to be observant of their condition when eating certain foods, including persimmons. It is important to observe whether the patient develops rashes, itchy skin, chest tightness, or other related symptoms. If such symptoms occur, it suggests an allergic reaction to persimmons, and the patient should stop eating them.