Asthma is a long-term respiratory disease where the airways are often sensitive, irritated and inflamed which causes difficulty in breathing, wheezing, chest tightness and coughing. These symptoms are roused by triggers that can inflame the airways and stimulate an asthma attack.Triggers can differ from person to person and ranges from airborne allergens to emotions and exercise.
In response to a trigger, two physiological processes occur called bronchoconstriction and inflammation. During bronchoconstriction, the smooth muscles along the airways to tighten, narrowing the passage and making it more difficult for air to flow into the lungs. The airways could also become inflamed and swollen which further reduces the passage of air in the lungs,
In response to a trigger, two physiological processes occur called bronchoconstriction and inflammation. During bronchoconstriction, the smooth muscles along the airways to tighten, narrowing the passage and making it more difficult for air to flow into the lungs. The airways could also become inflamed and swollen which further reduces the passage of air in the lungs,