Final answer:
Acute bronchospasm can be triggered by severe allergic reactions and is a key feature in asthma attacks, leading to symptoms such as difficulty breathing, chest tightness, and wheezing.
Step-by-step explanation:
Acute bronchospasm (spasm of the bronchus) can be caused by severe allergic reactions. Bronchospasms are a hallmark feature of asthma attacks, which can be severe and potentially life-threatening if not managed promptly. An asthma attack can be precipitated by a variety of environmental triggers, including dust, pollen, pet hair or dander, mold, tobacco smoke, and respiratory infections, or by factors like exercise and stress. During a bronchospasm, the bronchi constrict, making it difficult for air to flow into the lungs. Symptoms include difficulty breathing, chest tightness, and wheezing. Managing asthma includes avoiding known triggers and taking prescribed medications to help control inflammation and prevent bronchospasms.