Spring has a warm climate and the recovery of all things is a very comfortable season. However, for people who are prone to allergies, spring will face a disaster, because catkins will fly all over the sky in spring. Many people who are prone to allergies will itch and even have a rash after encountering catkins. So why are these people allergic to catkins? What causes catkins allergy? How should catkins allergy do? This article brings you the causes and precautions of catkins allergy. Let's have a look.
Catkins allergy what reason, why can you be allergic to catkins
There are two types of cells in the human body, mast cells and basophils, which are widely distributed in the nasal mucosa, gastrointestinal mucosa and subdermal connective tissue around microvessels and in the capsule of internal organs. These two types of cells contain allergic mediators such as histamine, leukotriene, serotonin and jigging. Stimulated by environmental factors such as chemicals, air pollution and sunlight radiation, a large number of free radicals will be produced in the body. If the free radicals are not removed in time after oxidation, the cell membrane of mast cells and basophils will be damaged, denatured and unstable. When unstable cells encounter allergens, antigens and antibodies react specifically, resulting in cell membrane detachment and release of allergic mediators. Allergic mediators can cause smooth muscle contraction, telangiectasia, enhanced permeability, mucus secretion and tissue damage, resulting in allergic reactions. In the process of allergic reaction, allergic mediators play a direct role. Allergens are the external cause of allergic diseases, while the low immune ability of the body and the oxidative damage of a large number of free radicals to mast cells and basophils are the internal cause of allergy. In addition, according to the theory of traditional Chinese medicine and the latest research results, allergies are mainly caused by wind, dampness, heat and evil accumulated in the blood and skin, or due to blood heat and external wind. That is, it has a considerable relationship with certain toxins in the blood of the human body.
After being inhaled, the oily and polysaccharide substances contained in catkins will be digested by nasal secretions, and then more than ten kinds of antibodies will be released. If this antibody meets the invading pollen and accumulates a large amount, it will cause skin allergy.
According to expert research, there are two main reasons: on the one hand, due to the improvement of people's living standards, they eat a large number of high protein and high calorie diets such as eggs and meat products in their diet, which leads to the hyperactivity of the ability to produce antibodies in the body. Therefore, when they encounter antigens such as pollen, they are more prone to allergic reactions. On the other hand, air pollution, water pollution and the large-scale application of food additives lead to human exposure to more antigen substances and promote human allergic diseases.
Precautions for catkins allergy
At ordinary times, try to reduce high protein and high calorie diet and eat less refined food. People with a history of allergies, such as allergic asthma, allergic rhinitis, nettle diagnosis or allergic dermatitis, wet diagnosis, should try not to go to places with lush flowers and trees, let alone smell flowers and plants casually; When going out for an outing, it is best to wear a hat, mask and long sleeved clothes, try to avoid direct contact with catkins, and take desensitization drugs, such as diphenhydramine and chlorpheniramine. In case of skin itching, systemic fever, cough and shortness of breath, you should leave here quickly. If the symptoms are mild, you can take diphenhydramine, chlorpheniramine or chlorpheniramine by yourself. In case of asthma symptoms, go to the hospital for diagnosis and treatment in time.
1. Avoiding catkins is an unavoidable allergen. It is best to live indoors in the onset season and close doors and windows to reduce the entry of outdoor sensitized catkins. If there is air conditioning, this can also be achieved. Try not to go into the wild. If you are allergic to vegetables and fruits, you should avoid eating allergic plant foods.
2. Oral immunotherapy as mentioned above, catkins of wind-borne flowers are difficult to avoid completely. Therefore, immunotherapy (commonly known as desensitization therapy) has become the main means of prevention of catkins. The principle of oral immunotherapy is to inject the patient's sensitive catkins extract into the patient gradually from less to more (subcutaneous injection is the most commonly used immunotherapy with better effect), so as to produce immunological changes in the patient, which is conducive to improving the patient's immunity to the catkins. It has been confirmed from many years of observation at home and abroad that if the allergen is of high quality, properly applied, the case selection is appropriate, the method is also correct, and the effect is quite good. How long does oral immunotherapy last? There is no final conclusion, but it is generally advocated that effective cases should last for 3 ~ 5 years. For patients with catkins with vegetable and fruit allergy, although food induced symptoms cannot be treated with immunotherapy, there is cross reactivity between catkins and vegetables or fruits. After one year of immunotherapy with their sensitive catkins, not only did the symptoms of catkins improve, but a considerable number of patients could eat their previously allergic catkins.