The hallmark of which disease is airway hyper-responsiveness leading to bronchoconstriction?

Prepare for your CVP and GI Pathology Exam. Study using flashcards and multiple choice questions with hints and explanations to excel in your test.

Airway hyperresponsiveness with bronchoconstriction is the defining feature of asthma. The airways respond abnormally to various triggers (allergens, exercise, cold air, irritants), leading to episodic narrowing that can improve with bronchodilators and anti-inflammatory treatment. This reversible, stimulus-driven obstruction is what sets asthma apart from other respiratory diseases: chronic bronchitis centers on long-term mucus production and partly fixed obstruction; pulmonary edema involves fluid accumulation in the lungs; pneumonia is an infectious consolidation.