AEMCA Practice Exam

Type 1 extrinsic asthma is characterized by its association with specific allergens, commonly those related to seasonal allergies such as pollen, mold, pet dander, and dust mites. Individuals with this type of asthma often experience symptoms during certain times of the year when these allergens are prevalent.

The effective response to bronchodilators is a key feature of type 1 extrinsic asthma. These medications help to relax the muscles around the airways, making it easier for individuals to breathe during an asthma attack. This reflects a typical pattern of airway hyper-reactivity and an underlying inflammation that is often responsive to short-acting bronchodilators.

In contrast, the other choices do not accurately describe type 1 extrinsic asthma. Type 1 extrinsic asthma can occur in both children and adults, and there are various treatment options available. It is not characterized by a lack of treatment. Furthermore, while irritants and chronic exposure to smoke can exacerbate asthma symptoms, they do not specifically define type 1 extrinsic asthma, which is primarily driven by allergic responses rather than irritant exposure.