*** FEWER than 10% of all people actually have true EIA, even if they have symptoms during exercise. Most people just have UNDERdiagnosed chronic asthma that is exaccerbated with exercise.
Asthma is an inflammation of the airways, causing a narrowing and ultimately a spasm in severe instances.
EIA does not involve this inflammation. It is caused by decreased water flow and other psychologic changes.

hope some of this helps.

Now if you have allergies that worsen the problem, then this is simple.