Suddenly I couldn't breathe and had difficulty breathing

Sudden shortness of breath and difficulty breathing are most likely due to a disease caused by bronchial asthma. The incidence rate of bronchial asthma is still relatively high, and it is also relatively dangerous during the onset period. If not treated in time, it may even pose a threat to the patient's life safety. There are many causes of bronchial asthma. Here we will introduce to you the common causes of bronchial asthma!

1. Genetic factors

Individual allergic constitution and external environmental influences are risk factors for the disease. Asthma is related to polygenic inheritance. The prevalence of asthma in relatives of asthma patients is higher than the prevalence in the population, and the closer the relationship, the higher the prevalence; the more serious the patient's condition, the higher the prevalence of his relatives.

2. Allergens

(1) Indoor and outdoor allergens Dust mites are the most common and most harmful indoor allergens and are an important cause of asthma worldwide. Dust mites are found in secretions such as fur, saliva, urine and feces. Fungi are also one of the allergens present in indoor air, especially in dark, humid and poorly ventilated places. Common outdoor allergens: Pollen and grass powder are the most common outdoor allergens that cause asthma attacks. Others include various specific and non-specific inhalants such as animal dander, sulfur dioxide, and ammonia.

(2) Occupational allergens Common allergens include grain powder, flour, wood, feed, tea, coffee beans, silkworms, pigeons, mushrooms, antibiotics (penicillin, cephalosporin), rosin, reactive dyes, persulfate, ethylenediamine, etc.

(3) Drugs and foods Aspirin, propranolol (Inderal) and some non-corticosteroid anti-inflammatory drugs are the main allergens of drug-induced asthma. In addition, foods such as fish, shrimp, crab, eggs, and milk can also trigger asthma.

3. Precipitating factors

Common air pollution, smoking, respiratory infections such as bacteria, viruses, protozoa, parasites, pregnancy, strenuous exercise, climate change; various non-specific stimuli such as inhalation of cold air, distilled water droplets, etc. can induce asthma attacks. In addition, psychological factors can also trigger asthma.