Is asthma contagious?

Asthma is a relatively common disease. Because the condition is complicated, there are genetic factors, and some cases are allergic asthma, many people are not sure how to deal with it. In fact, whether asthma is contagious depends on the individual's physical condition. Generally speaking, asthma is rarely contagious.

The pathogenesis of asthma is very complex, but it can be roughly divided into two categories: 1. Infectious asthma. This type of asthma is contagious. This type of asthma does not occur out of thin air. Usually there will be prodromal symptoms, such as colds, persistent high fever, etc. The occurrence mechanism of this type of asthma is due to the reproduction of pathogenic microorganisms in the human airway, causing an inflammatory reaction, which causes the airway to be blocked by inflammatory secretions, and then the ventilation dysfunction of the lungs leads to difficulty in gas exchange, which manifests as asthma.

2. Allergic asthma. This is because everyone has different physical constitutions. The substances that your cousin is allergic to will not have any effect on you. The pathogenesis of allergic asthma is different from that of infectious asthma because there is no influence of pathogenic microorganisms. It is just a simple antigen-antibody complex that triggers an allergic reaction. Under the action of histamine, the smooth muscles of blood vessels contract, the permeability of blood vessels increases, and substances in the blood will pass through the blood, causing difficulties in gas exchange in the airways.

Your cousin's allergens exist in your living environment, so it is better to let your cousin change his environment. The treatment is not too difficult. You can take some anti-allergic drugs such as loratadine, but this is only a temporary solution and not a permanent cure. It is better to let your cousin change his environment.