Which of the following is a common characteristic of nonallergic asthma that a nurse might find when assessing an adult client?

Rationale: A. Symptoms triggered by pollen exposure is incorrect because this is characteristic of allergic (extrinsic) asthma, where exposure to allergens such as pollen, dust mites, or animal dander triggers symptoms. B. Development of symptoms only during spring and fall is incorrect as this also reflects seasonal allergic asthma, associated with seasonal allergen exposure rather than nonallergic triggers. C. Wheezing and shortness of breath during exercise is correct. Nonallergic asthma (also called intrinsic asthma) is not triggered by allergens but can be precipitated by exercise, cold air, respiratory infections, stress, or irritants like smoke or strong odors. Exercise-induced bronchoconstriction is a common manifestation in adults with nonallergic asthma. Symptoms often include wheezing, coughing, chest tightness, and shortness of breath during or after physical activity. D. Improvement of symptoms with antihistamines is incorrect because nonallergic asthma does not respond to antihistamines, which target allergic pathways. Management focuses on bronchodilators and anti-inflammatory medications rather than allergy medications.