Asthma is due to constriction and inflammation of the small airways. In asthma there is a special type of inflammation which narrows the small airways and makes them 'twitchy' and very sensitive to any environmental changes. The airways also become blocked with sticky mucus.During an asthma attack breathing becomes harder, even at rest. There may be a cough or wheezing.n asthma there is a special type of inflammation which narrows the small airways and makes them 'twitchy' and very sensitive to any environmental changes. The airways also become blocked with sticky mucus. During an asthma attack breathing becomes harder, even at rest. There may be a cough or wheezing.
Common reasons teens abuse drugs include: 1  Curiosity. 2  Peer pressure. 3  Stress. 4  Emotional struggles. 5  A desire to escape.
Secondly, teens are abusing dissociative drugs because it is cheap. Compared to buying a small amount of cocaine for a little over 50 dollars, teens can abuse dissociative drugs for 5-10 dollars. It is easy to support a DXM habit when it is as cheap as cough syrup.