Allergic asthma, caused by allergies, is a relatively stubborn disease that can accompany a lifetime if it lacks active treatment. Most asthma patients have allergies or have allergic rhinitis. Asthma patients with allergic rhinitis have symptoms such as runny nose, sneezing, itchy nose, itchy eyes and tearing as precursors to the onset of the disease. Because of the similarity of symptoms to respiratory infections or inflammation, treatment is often overlooked or misdiagnosed in the early stages. Nowadays, most experts and scholars believe that allergic rhinitis and allergic asthma are the same disease with a common theoretical basis, upper and lower airways, the same airway, and the same disease. What are the causes of allergic asthma? Mainly include inhalants (mites, pollen, fungi, animal dander, toluene diisocyanate, phthalic anhydride, ethylenediamine, penicillin, protease, amylase, silk, animal dander or excrement, etc.), infections (bacteria, viruses, mycoplasma, etc.), food (fish, shrimp, crab, eggs, milk, etc.), climate change, mental factors (excitement, anxiety, resentment, etc.), exercise, drugs ( aspirin, insulin, etc.) and menstruation. What are the clinical symptoms of allergic asthma? Allergic asthma attacks are usually preceded by signs of rhinitis, such as sneezing, runny nose, etc. If left untreated, asthma may occur due to the aggravation of bronchial obstruction, and severe cases may be forced to take a sitting position or be in telescopic breathing, dry cough or cough a lot of white foamy sputum, or even cyanosis. However, it can generally be relieved by itself or after treatment with self or wheezing drugs. Some patients may experience a relapse after a few hours of remission, even leading to a persistent state of asthma. Desensitization for allergic asthma Desensitization, also known as allergen vaccination, is one of the most important treatments for asthma. Through a specific method, the allergen is formulated into an agent that the patient uses and is able to gradually adapt to the allergen until antibodies are produced. When the patient is exposed to the substance again, the allergic reaction is not induced and the symptoms caused by the allergy will disappear or be significantly reduced for treatment purposes. Children who have difficulty in completely avoiding allergens (e.g. dust mites) can be treated by this method with clear efficacy and fewer side effects. However, desensitization treatment takes longer (2 to 3 years) because asthma is a chronic and recurrent disease and desensitization to reduce the sensitivity of the body to allergens cannot be rushed. At the beginning of desensitization treatment, if the child has allergic symptoms, it is still necessary to combine the use of symptomatic medications under the guidance of a doctor. The root cause of the symptoms of allergic diseases is often due to the accumulation of inflammation in the airways. Desensitization treatment reduces and avoids the development of new inflammation by improving the body’s tolerance; medication is directed at the symptoms that have developed and controls the inflammation. Therefore, if symptoms persist, medication should still be administered according to medical advice and should not be stopped without authorization. The earlier desensitization treatment is carried out in children, the better the results will be, basically changing the allergy condition and achieving a cure. However, desensitization should be stopped during an asthma attack and resumed when the coughing and wheezing are under control. When you do desensitization, you should follow the method of gradually increasing the dose. The World Health Organization has a clear rule to gradually increase the dose according to this method, otherwise it can sometimes induce asthma and even induce anaphylaxis.