Differentiate angina from musculoskeletal chest pain with two contrasting features.

Differentiate angina from musculoskeletal chest pain with two contrasting features.

• A. Angina is nocturnal and worsens with rest; MSK pain is only during exertion.
• B. Angina is exertion-related and relieved by rest and nitroglycerin; MSK pain is reproducible with palpation or movement.
• C. Angina is always reproducible with palpation; MSK pain is not.
• D. Angina pain is localized to a rib; MSK pain is diffuse.

Answer: (B)

Angina is driven by myocardial ischemia that becomes evident with higher oxygen demand, usually during physical exertion or emotional stress, and it typically eases with rest. It often responds to nitroglycerin because the medication dilates coronary vessels and lowers myocardial oxygen demand, providing quick relief. Musculoskeletal chest pain, by contrast, comes from chest wall structures and is usually pinpointed and reproducible—pressing on a tender spot or moving a part of the chest reproduces the pain. This contrast in triggers and in how the pain can be provoked or relieved is the key to telling them apart. So the best choice captures both: angina is exertion-related and relieved by rest and nitroglycerin; musculoskeletal chest pain is reproducible with palpation or movement. The other descriptions mix up these features—nocturnal or rest-worsening patterns, or pain that is always reproducible with touch, or rib-localized patterns—none fit the classic distinctions as clearly.

Angina is driven by myocardial ischemia that becomes evident with higher oxygen demand, usually during physical exertion or emotional stress, and it typically eases with rest. It often responds to nitroglycerin because the medication dilates coronary vessels and lowers myocardial oxygen demand, providing quick relief. Musculoskeletal chest pain, by contrast, comes from chest wall structures and is usually pinpointed and reproducible—pressing on a tender spot or moving a part of the chest reproduces the pain. This contrast in triggers and in how the pain can be provoked or relieved is the key to telling them apart.

So the best choice captures both: angina is exertion-related and relieved by rest and nitroglycerin; musculoskeletal chest pain is reproducible with palpation or movement. The other descriptions mix up these features—nocturnal or rest-worsening patterns, or pain that is always reproducible with touch, or rib-localized patterns—none fit the classic distinctions as clearly.