Which clinical manifestation is typical in asthma patients?

Episodic wheezing is a hallmark clinical manifestation in asthma patients. This occurs due to the narrowing and obstruction of the airways as a result of inflammation, bronchoconstriction, and increased mucus production, which are characteristic features of asthma. Wheezing is a high-pitched whistling sound produced during breathing, especially upon expiration, and it signifies that airflow is restricted in the airways, a common occurrence in individuals experiencing an asthma attack or exacerbation.

Chronic cough can be associated with asthma but is not specific to it and can occur in various other respiratory conditions. Pneumothorax refers to the presence of air in the pleural space and is a separate condition altogether, often caused by injury or lung disease, and is not a typical manifestation of asthma. Fluid in the pleural space, known as pleural effusion, is also unrelated to asthma, as it indicates an accumulation of fluid that could be due to infections, heart failure, or malignancy, rather than the airway inflammation and obstruction present in asthma.