Which of the following is a common associated symptom of RAD?

Chest tightness is a common associated symptom of Reactive Airway Disease (RAD), which includes conditions such as asthma and bronchospasm. This symptom arises from the inflammation and constriction of the airways, leading to a feeling of pressure or tightness in the chest. When the airways are reactive, particularly in response to allergens, exercise, or irritants, individuals may experience difficulty in breathing, which is typically accompanied by this sensation of tightness.

In contrast, hemoptysis (coughing up blood), night sweats, and fever are not typical symptoms of RAD. These symptoms may indicate other underlying conditions, such as infections, malignancies, or systemic illnesses. Understanding the specific symptoms associated with RAD can help in distinguishing it from other respiratory or systemic issues and aid in proper diagnosis and management.