I like coughing and itchy throat when it is cold or cold, but sometimes I feel relieved by blowing hot air on my back neck with a hair dryer.

Allergic cough, also known as cough variant asthma, is an allergic disease. Allergic cough's clinical manifestations are: chronic cough without cause for more than two months, paroxysmal irritating dry cough, or a small amount of white foam-like sputum; When inhaled, it can aggravate the irritating smell; Many antibiotics were ineffective, and there was no obvious abnormality in chest X-ray or CT examination. According to experts, through clinical examination, allergic cough can be diagnosed if eosinophils increase and serum IgE is above 200.

The occurrence of allergic cough is closely related to heredity and environmental pollution. Although allergic cough is not contagious, it is easily passed down in the family. Generally speaking, if parents are allergic, their children are more likely to have allergic cough's disease.

Is allergic cough a small problem?

Many patients think that allergic cough only coughs a few times and sneezes occasionally, which has little influence on life. It is easy to ignore the disease and delay the cure. However, this concept should be corrected. Allergic cough is no small problem.

The incidence of allergic asthma in allergic cough patients is about 20%-38%, which is significantly higher than the incidence of asthma in the general population of 2%-5%. Among patients with allergic asthma, the incidence rate in allergic cough is as high as 78%, which is much higher than the incidence rate of 5%-20% in the general population. Allergic cough and allergic asthma are more common in children under 14 years old. And in this part of the population, the vast majority of people showed allergic cough first, and then allergic asthma. It shows that allergic cough has a very close relationship with allergic asthma.

In addition, once allergic cough develops to moderate and severe degree, respiratory symptoms will recur, which will affect work and study during the day and make patients miserable at night. In addition, allergic cough patients are prone to allergic conjunctivitis, allergic rhinitis and other diseases, which will seriously affect the quality of life of patients if they are not actively treated.

Allergic cough is not equal to catching a cold and coughing. How to judge?

Cold and cough: it is a self-limiting disease, which is an inflammatory reaction of respiratory tract caused by bacteria, viruses or mycoplasma. Pay attention to rest and diet, and you will recover in a few days. It's a short cough. At the beginning, there will be some symptoms, such as throat discomfort, itchy throat, and then cough. On the basis of coughing, there will be some cold symptoms: runny nose, low fever, general laziness, sore throat and so on. And there are no eyes, nose, throat and itching to make you doubt life. If there is a history of rhinitis and asthma in allergic cough in your family, you should be highly suspicious. You'd better go to the hospital to rule out allergic cough.

Allergic cough: It is caused by allergens, such as allergic to cold air, allergic to pollen and allergic to mites. The baby is active, crying, and will get worse when he gets up in the morning; Mostly irritating dry cough, sometimes children cough out of breath; No fever, thin expectoration, white foam; The delay time is long, usually more than 4 weeks, and cold medicine, anti-inflammatory drugs and other drugs are ineffective, because as long as the allergen still exists, allergic symptoms will always exist. The frequency of coughing is divided into: coughing for a while before going to bed at night; Wake up in the middle of the night and cough for a while; Wake up in the morning and cough for a while. The cycle is long, and the paroxysmal cough lasts for more than 4 weeks. Some children can cough for three months. In severe cases, it can further lead to a series of complications such as allergic pharyngitis and asthma, which have a great impact on life and study, and even affect physical and intellectual development.

What should I do after being diagnosed as allergic cough?

1, avoid contact with allergens.

The occurrence of allergic cough must meet three conditions: first, there must be a specific antigen, that is, a substance that causes the body's immune response, which is what we often call an allergen; Followed by atopic individuals, which is what we call allergic constitution; Finally, allergic individuals are exposed to allergens. So for those patients in allergic cough, the simplest and best way is to stay away from allergens. For patients with seasonal allergic cough, try to reduce going out in allergic season, wear a mask when going out, and go to other cities or regions without allergens if possible. For many perennial allergic cough patients, there is an invisible but ubiquitous allergen in life, that is, dust mites. Therefore, patients who have been in allergic cough all the year round should maintain environmental hygiene and reduce the concentration of dust mites in the environment.

2. medication.

Drug therapy is a common treatment. However, we should consider how to choose among many drugs according to the age, onset time and severity of the child.

According to the latest guidelines, for children with mild symptoms and strong seasonality, the second generation antihistamines are the first-line drugs at present, and children under 10 can use loratadine. If the symptoms are severe, second-line antihistamines combined with glucocorticoid can be considered.

3. Immunoregulation and IgE reduction therapy

Studies have proved that allergic cough is a typical IgE-mediated type, and the immune system IgE immunoglobulin of allergic cough patients is 1- 10 times higher than that of normal people. These higher IgE will disturb the immune system and make it sensitive, which will lead to allergic cough's disease, allergic asthma and allergic rhinitis.

Xinmin Kang anti-allergic probiotics contain six kinds of bacteria, which can comprehensively regulate allergic constitution. It can stimulate the production of cytokines such as IL- 12, IFN-γ, strengthen the regulatory ability of immune T cells, further inhibit the overactivation of Th2 cells, maintain the balance of Th 1 and Th2, reduce allergic reactions, and at the same time reduce the immune sensitizer IgE, effectively block the combination of allergens and immune sensitizer IgE antibodies, and directly block the allergic biological chain from the immune source. In addition, Xinmin Kang probiotics can improve the excretion of immunoglobulin IgA and enhance the barrier function of skin appearance, respiratory tract and digestive tract against the invasion of foreign allergens. Adequate supplementation can promote serum IgE antibody, interferon secretion and Th 1 immune response; Reducing serum IgG is helpful to reduce the secretion of IL-5 related to allergic reaction, and can effectively improve human immune system, and adjust allergic constitution through immunoglobulin regulation.

In addition, allergic cough generally has obvious seasonality, and the incidence rate is high in spring and autumn, so preventive medication can be taken two weeks before onset. As far as the present situation is concerned, preventive medication is a trend in the future.