What is asthma?
Asthma is a long-term disease of the airways in the lungs. Its symptoms are caused by inflammation, which makes the airways red, swollen, narrower and extra-sensitive to irritants. This leads to recurrent attacks of wheezing, breathlessness, chest tightness and coughing. Mild attacks can settle down without treatment, but treatment usually helps them to resolve more quickly. Appropriate treatment can also reduce the risk of further attacks.
• What is inflammation in the airways? How does it affect asthma?
Inflammation is a reaction to infections and other triggers in the lining of the airways . The inflammation makes the airways become red, swollen, narrower and extra-sensitive.
Inflammation of the airways causes asthma symptoms
like wheezing, breathlessness, chest tightness and coughing by restricting or limiting the airflow to and from the lungs.