Asthma is a respiratory condition that involves allergies and your lungs: people with asthma have trouble breathing at times.
Asthma is a very common disorder that makes breathing difficult. An allergic reaction, too much exercise, or just being stressed out can bring on an asthma attack. When someone has an asthma attack, it's very hard for them to get a good breath of air. Fortunately, asthma is not usually a life-threatening disease, and people who are asthmatic are fine most of the time.