Like "classic" or "typical" asthma, no one really knows what causes cough-variant asthma. However, coughing may start after people are exposed to allergens, or when they are breathing in cold air. Coughing may also follow an upper respiratory infection. For example, sinusitis with asthma is common.
Then, can asthma cause excessive mucus?
Coughing in people with asthma can be helpful because it's one of the body's natural defense mechanisms. A productive asthmatic cough will expel phlegm and mucus from the lungs. In most cases of asthma, the cough is considered nonproductive. An asthma cough is also often accompanied by wheezing.
What causes increased mucus production in asthma?
Leukotrienes are chemicals that are released from the lungs in people with asthma, causing inflammation and increased mucus production in the airways. They also cause the muscles lining the airways to contract, which narrows the airways.
Can asthma cause a tight feeling in throat?
Asthma is commonly associated with symptoms of chest tightness, shortness of breath, coughing and/or wheezing. If you suffer from VCD, you usually have symptoms of troubled breathing and/or wheezing. In addition, you may commonly complain of throat tightness, hoarseness and difficulty getting air in.