What physical examination finding is often associated with asthma?

Wheezing is a common physical examination finding in patients with asthma. It is characterized by a high-pitched whistling sound during breathing, particularly on expiration. This occurs due to the narrowing of the airways, which is a hallmark of asthma. The inflammation and bronchoconstriction associated with asthma lead to airflow obstruction, resulting in the characteristic wheezing sound.

Cyanosis is more indicative of severe hypoxia and respiratory failure, typically not a finding in mild to moderate asthma cases. Hyperresonance may be associated with conditions like pneumothorax or emphysema rather than asthma itself. Clubbing is often associated with chronic respiratory diseases but is not typically seen in asthma, which is more characterized by reversible airway obstruction. Thus, wheezing serves as a clear and direct indicator of asthma exacerbation and airway involvement.