Is bronchial asthma contagious?

We also call bronchial asthma asthma. There are many patients with bronchial asthma, so we must pay attention to bronchial asthma. Once we have bronchial asthma, we must know how to treat bronchial asthma. Bronchial asthma is related to many factors, including genetic factors, smoking, infection, climate, environment and other reasons.

We need to know some of the causes of bronchial asthma in our lives, so that we can try to avoid bronchial asthma. Many friends do not have a deep understanding of bronchial asthma, and have always had a question, that is, is bronchial asthma contagious?

Bronchial asthma is a chronic inflammatory disease of the airways involving multiple cells (such as eosinophils, mast cells, T lymphocytes, neutrophils, airway epithelial cells, etc.) and cell components. This chronic inflammation leads to airway hyperresponsiveness, usually with widespread and variable reversible airflow limitation, and causes recurrent symptoms such as wheezing, shortness of breath, chest tightness or cough, which often occur at night and/or early morning. Most patients can relieve themselves or with treatment.

1. Typical bronchial asthma presents with recurrent symptoms such as chest tightness, wheezing, difficulty breathing, and cough. Before an attack, there are often precursor symptoms such as nasal congestion, sneezing, and itchy eyes. Severe attacks may cause severe breathing difficulties and hypoxemia within a short period of time. Sometimes cough is the only symptom (cough variant asthma). Attacks and exacerbations at night or in the early morning are one of the characteristics of asthma. Asthma symptoms can develop within minutes. Some symptoms may resolve on their own, but most require active treatment.

During an attack, there are scattered and diffuse expiratory wheezing sounds in both lungs, the expiratory phase is prolonged, and sometimes there are dry rales in both the inspiratory and expiratory phases. In severe attacks, breath sounds may become low and wheezing sounds may disappear, which is clinically called "static lungs". It indicates that the condition is serious and respiratory arrest may occur at any time.

Asthma patients may not have any symptoms or signs when they are not having an asthma attack.

2. According to clinical manifestations, it can be divided into acute attack period, chronic persistent period and clinical remission period. The chronic persistent phase refers to the occurrence of symptoms (wheezing, shortness of breath, chest tightness, cough, etc.) at varying frequencies and/or varying degrees; the clinical remission phase refers to the disappearance of symptoms and signs with or without treatment; lung function returns to the level before the acute attack and lasts for more than 3 months.

Above we introduced what bronchial asthma is. We know that the occurrence of bronchial asthma brings serious physical harm to patients, so we need to know some knowledge about bronchial asthma and do a good job in preventing and treating bronchial asthma. In fact, bronchial asthma is not contagious.