As a common condition, Asthma may be a term that is no stranger to you. However, did you know that asthma is not just asthma? It can be occupational asthma, exercise-induced asthma, or cough variant asthma which will be mentioned below in this article. Let’s see.
What is cough variant asthma?
Cough variant asthma is a type of asthma. The main symptom of cough variant asthma is a dry cough. Cough variant asthma is a kind of asthma, but patients may not have other classic symptoms of asthma such as shortness of breath and wheezing.
Sometimes, cough variant asthma can be characterized by a cough that has lasted longer than 6-8 weeks. The coughing can occur at night, waking the patients up, or during the day, affecting their daily lives. The coughing can get worse with exercises or when patients are exposed to asthma triggers or allergens such as dust mites, mold spores, fragrances, or when they are in the cold temperatures.
Cough variant asthma can happen at any age, but it usually starts in childhood.
What triggers cough variant asthma?
The causes of cough variant asthma are not really clear. However, the coughing may start when patients are exposed to allergens or when they are in cold temperatures. The coughing may also occur after a respiratory infection.
Moreover, coughing after taking beta blockers is reported. Beta blockers are drugs used for high blood pressure, heart failure, migraines, heart diseases, as well as glaucoma and other eye problems. Some people who are sensitive to aspirin can also have cough variant asthma.
How is cough variant asthma?
Sometimes, the only symptom that the patients undergo is a cough. And a cough can be the sign of several medical conditions such as common colds.
To diagnose the condition, the doctor may ask the patients about their medical histories. Then the doctor can use a special device to listen to their breaths. However, these things may be unable to help the doctor determine the condition. Thus, chest X-rays, peak flow measurements and spirometry are recommended. In spirometry, doctors use a device to measure how much air the patients can exhale after first taking a deep breath (the patients take a deep breath and then exhale), and how fast the patients can remove the air from their lungs.
If spirometry cannot confirm the cough variant asthma, a methacholine will be used. Methacholine can cause the airways to narrow. During this test, the patients inhale methacholine aerosol mist before and after spirometry. After the test, the patients will be given an airway-opening drug to remove the effects of methacholine.
How is cough variant asthma?
Cough variant asthma is treated with an asthma inhaler. The asthma inhaler contains albuterol, ipratropium and inhaled steroids. The symptoms of asthma can be improved after 6-8 weeks.
Cough variant asthma is one type of asthma. It can be characterized by a dry cough although the patients may have other symptoms of asthma. The cause is unknown and there is no cure for this condition, but treatments can help relieve the symptoms.
Hello Health Group does not provide medical advice, diagnosis or treatment.
Review Date: July 7, 2017 | Last Modified: July 7, 2017
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