The high season of asthma?

1. It depends on what the allergen is. Patients who are allergic to dust mites often have attacks all the year round. Patients who are allergic to pollen generally have obvious symptoms in early spring and autumn, and they have symptoms all year round in the later period. It is worth noting that asthma is characterized by exacerbation at night and in the early hours of the morning. It may be related to the level of human hormones.

2. The direct cause of asthma is airway hyperresponsiveness, and the fundamental cause is that allergens stimulate the body to produce IgE antibodies, which attach to mast cells and eosinophils and become sensitized. When the allergen enters the body again, it combines with IgE, stimulates the corresponding cells, synthesizes and releases various cytokines, resulting in contraction of respiratory smooth muscle, increased mucus secretion, increased vascular permeability and infiltration of inflammatory cells. * * * High reactivity with synthesis gas channel. I wonder if I can make this clear. )

3. Symptoms are obvious, such as dyspnea, chest tightness, cough, expectoration, sitting and dyspnea.

4. Generally, acute attack can be carried out in two ways: removing allergens and retaining β2 receptor agonists (salbutamol, terbutaline, etc. ) and then go to the hospital. Leave the rest of the treatment to the doctor, don't treat it yourself, and don't take it lightly. Acute attacks can be fatal. ...

A bunch. I hope it helps you. . .