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.
Drug abuse at any age can cause serious health effects, but teens who abuse drugs are at particular risk for negative consequences. Teens who abuse drugs are more likely to struggle with addiction later in life and have permanent and irreversible brain damage.