1. Allergic cough is a type of cough related to exposure to allergens. Its common cause is cough variant asthma, which is a special manifestation of asthma. It is mainly caused by persistent or recurring coughs for more than one month. Months, often accompanied by paroxysmal cough at night or early in the morning, with little phlegm, aggravated by exercise, without clinical manifestations of infection, or ineffective after a long period of antibiotic treatment, treatment with bronchodilators can relieve cough attacks, often with personal or family allergies . There are also patients whose cough is also related to allergies, but does not meet the diagnosis of cough variant asthma. The cause may be upper airway cough syndrome caused by allergic rhinitis, allergic cough, or non-asthmatic eosinophils. Diseases such as bronchitis.
2. High-risk groups
Children and people with allergies
Common causes
Pollen, indoor dust, dust mites, molds, viruses Allergies are induced by animal fur, cockroaches, feathers, food, etc.
3. Cause
Contact with allergens in the environment, such as pollen, indoor dust, dust mites, mold, Viruses, animal fur, cockroaches, feathers, food, etc. often induce allergic coughs. Indoor air pollution and harmful gases, such as chemical gases, including the smell of paint, benzene, formaldehyde and other decorative materials, various chemical pesticides containing DDV, incense smoke, oil smoke, soot and mosquito coil smoke are also common triggers. Cold air, climate change, etc. can also cause cough in these patients.
IV. Clinical manifestations
The symptoms of allergic cough are mainly long-term and stubborn cough, usually more than 3 weeks, often caused by inhaling irritating odors, indoor air pollution and harmful gases. Cold air, exposure to allergens such as pollen, indoor dust, dust mites, molds, viruses, animal fur, cockroaches, feathers, food, etc., exercise or upper respiratory tract infection can trigger it. Some patients have no triggers. It usually gets worse at night or early in the morning.
V. Treatment
1. Drug treatment
(1) Inhaled glucocorticoids are mainly used for anti-inflammatory treatment, and the duration of inhaled glucocorticoids should be at least Continue for 3 months to avoid recurrence. Commonly used clinically are mixtures of hormones and β2 receptor agonists such as Symbicort and Seretide.
(2) Bronchodilators such as inhaled or oral β2 receptor agonists and/or oral theophylline drugs can temporarily relieve cough symptoms, but long-term use alone is not recommended.
(3) Anti-allergic drugs such as levocetirizine, loratadine and mast cell stabilizers such as Nedocromil and cromoglycate sodium can also achieve good results, but they often need to be used continuously. More than 2 weeks. For patients who relapse after discontinuing medication, the allergens should be identified in a timely manner, effective preventive measures should be taken, and allergen vaccine treatment should be given if necessary.
(4) The leukotriene receptor antagonist montelukast, which together with hormones is called a "dual-channel" drug for asthma treatment.
2. Traditional Chinese Medicine Treatment
Chinese medicine believes that it is mainly related to "wind" and "phlegm". In the acute stage, traditional Chinese medicine to dispel wind and reduce phlegm is used to dispel wind, clear the lungs, resolve phlegm and relieve cough. , during the remission period, use the method of nourishing the lungs and strengthening the spleen to remove the "rattans", which can often achieve good results.