ABSTRACT
A 10-year old, otherwise healthy male is brought to your office by his mother for wheezing over the last month. The wheezing is episodic and occurs during vigorous exercise, or exposure to cigarette smoke or dusty rooms. The boy describes that his “breathing feels tight,” and is accompanied by nonproductive coughing. The patient's mother and father are lifelong nonsmokers, and there are no sources of indoor air pollutants in the home, such as kerosene heaters, wood-burning stoves, or fireplaces.
