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Asthma is characterized by recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing. [21] Sputum may be produced from the lung by coughing but is often hard to bring up. [22] During recovery from an asthma attack (exacerbation), the sputum may appear pus-like due to high levels of white blood cells called eosinophils. [23]
The cardinal symptoms of an asthma attack are shortness of breath , wheezing, and chest tightness. [9] Individuals with type 1 suffer chronic attacks in spite of ongoing medical therapy, while those with type 2 experience sudden, acute and even potentially life-threatening attacks even though otherwise their asthma seems well managed. [10]
Dr. David Beuther from National Jewish Health said: "Roughly about 1 in 10 adults has asthma, and some of those have carried it through from childhood. But many of them developed it new as an adult."
It is also preferred due to the former term giving the false impression that asthma is caused by exercise. In a patient with EIB, exercise initially follows the normal patterns of bronchodilation. However, by three minutes, the constriction sets in, which peaks at around 10–15 minutes, and usually resolves itself by an hour.
If such an attack - involving difficulty breathing, wheezing, coughing and chest tightness - cannot be controlled with regular inhalers then doctors currently prescribe a course of steroids.
In people with asthma, the airways can become narrow and produce extra mucus that causes coughing and wheezing and makes it hard to breathe, the Mayo Clinic explains.
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