Which of the following is not a symptom of asthma?

Damage to alveolar walls is not a symptom of asthma. Asthma primarily affects the airways (bronchi and bronchioles) rather than the alveoli. Common symptoms of asthma include wheezing, shortness of breath, chest tightness, and coughing. These symptoms result from inflammation and constriction of the airways, which make breathing difficult. Damage to alveolar walls is more commonly associated with conditions such as emphysema, not asthma.