Pollen allergy is a common disease in allergies, and the incidence rate is increasing year by year, which seriously affects people’s health. Mainly manifested as catarrhal inflammation of the respiratory tract and conjunctiva, may be associated with lesions of the skin and other organs. Pollen allergy has become a veritable epidemic.
Pollen is a male germ cell of all kinds of plants, which is equivalent to a mammalian sperm. A pollen is a fertilized unit. Some people inhaled pollen, an allergic reaction, pollen allergy, also known as “seasonal allergic rhinitis”, is a series of pathophysiological processes caused by pollen sensitization in atopic physique patients.
The main symptoms
Pollen diameters are generally around 30 to 50 microns, and they are easily absorbed into the respiratory tract when they are dispersed in the air. Have
Pollen allergy related comics
Inhalation of these pollen by people with a history of pollen allergy produces an allergic reaction, which is pollen allergy. The main symptoms of pollen allergy are sneezing, salivation, tearing, nasal, eye and external ear canal itching, severe cases can also induce bronchitis, bronchial asthma, pulmonary heart disease (multiple in summer and autumn). Pollen causes allergies in humans because pollen is rich in protein, some of which are major allergens that produce allergies.
Pollen allergy is also called hay fever, which is characterized by runny nose, sneezing, itchy nose and cough. There are three main manifestations of children with pollen allergy:
First, “pollen allergic rhinitis”, itchy nose, sneezing, runny nose, blocked nose, poor breathing, etc.;
The second is “pollen allergic asthma”, which is characterized by paroxysmal cough, difficulty in breathing, white foamy mucus, sudden onset of asthma and getting heavy weight. After good, it is the same as normal people;
The third is “pollen allergic conjunctivitis”, which is characterized by itchy eyes and swelling of the eyelids, often accompanied by watery or purulent mucus secretions.
Although the incidence of pollen allergy symptoms is high, it is caused by a very small number of pollen. The reason why pollen causes allergies in the human body is mainly because the pollen particles carry antigenic determinants that can cause allergies. Typical clinical symptoms of pollen allergy such as sneezing, watery nose, nose, eyes, ears, itching, may be associated with difficulty breathing or urticaria, eczema.
In the spring of March, spring blossoms, this is the season when people are most susceptible to pollen allergy.
Allergies are an allergic reaction of the body. They are an abnormal reaction of normal substances (allergens). Only when allergens come into contact with people with allergies, allergic reactions occur. Allergens are pollen, dust, and allogeneic proteins. Hundreds of chemical substances, ultraviolet rays, etc., some allergies and even no allergens.
The incidence of allergic diseases (including allergic syndrome) is about 20%. From newborn to middle-aged and older people, there are no obvious gender characteristics, but there are significant hereditary features.
There are two types of cells in the human body, mast cells and basophils, which are widely distributed in the nasal mucosa, the gastrointestinal mucosa, and the microvascular around the subcutaneous connective tissue and the envelope of the internal organs. These two types of cells contain allergic mediators such as histamine, leukotrienes, serotonin, and stimuli. In the body, a large amount of free radicals are generated in the body under the stimulation of environmental factors such as chemical substances, air pollution, and solar radiation.
Can be removed in time, will destroy the cell membrane of mast cells and basophils, causing cell membrane degeneration leading to cell instability. When an unstable cell encounters an allergen, the antigen and the antibody react specifically, causing the cell membrane to detach and releasing an allergic medium. Allergic mediators can cause smooth muscle contraction, telangiectasia, increased permeability, mucus secretion and tissue damage, which can trigger allergic reactions. In the process of allergic reactions, allergens play a direct role. Allergens are an external cause of allergic diseases, and the body’s immune ability is low. The oxidation of mast cells and basophils by a large number of free radicals is an internal cause of allergies. In addition, according to the theory of traditional Chinese medicine and the latest research results, allergies are mainly caused by wind, humidity, heat, evil in the blood and skin, or due to blood heat and sensation. That is, it has a considerable relationship with the presence of certain toxins in the blood in the human body.
When the oily and polysaccharide substances contained in the pollen are inhaled, they are digested by the secretions of the nasal cavity, and then more than ten kinds of antibodies are released. If this antibody meets invasive pollen and accumulates in large amounts, it can cause skin irritation.
According to expert research, the main reasons are two aspects: on the one hand, due to the improvement of people’s living standards, a large amount of high-protein, high-calorie diets such as eggs and meat products are taken in the diet, resulting in the ability to produce antibodies in the body. It is more prone to allergic reactions when it encounters antigens such as pollen. On the other hand, because of air pollution, water pollution and the extensive application of food additives, the human body is exposed to more antigenic substances, which causes humans to develop allergic diseases.
The pollen of wind-flowered flowers is difficult to avoid completely. Therefore, immunotherapy (also known as desensitization therapy) has become the main preventive measure of hay fever. The principle of immunotherapy is to inject the patient’s sensitive pollen extract into the patient from less to more (the most commonly used immunotherapy, and the better effect is subcutaneous injection), so that the immunological changes in the patient’s body are beneficial to the patient. Improve the patient’s immunity to the pollen. Observed from years of observations in various countries, if the quality of the allergen is high, the application is appropriate, the case selection is appropriate, the method is correct, and the effect is quite good. How long does immunotherapy last? There is no conclusion, but it is generally recommended that effective cases should last for 3 to 5 years.