Chest discomfort/tightness/pressure
Gradual onset/resolution
No respirophasic component to pain
Poorly localized; radiation of pain is common
Often no exertional component to chest pain
Exertion results in variable symptoms, including increase, decreased, or no change in chest pain
Makes exertional symptoms unreliable
Associated with nausea, diaphoresis, and palpitations
Attacks may be precipitated by hyperventilation
Gradual onset/resolution
No respirophasic component to pain
Poorly localized; radiation of pain is common
Often no exertional component to chest pain
Exertion results in variable symptoms, including increase, decreased, or no change in chest pain
Makes exertional symptoms unreliable
Exertion results in variable symptoms, including increase, decreased, or no change in chest pain
Makes exertional symptoms unreliable
Makes exertional symptoms unreliable
Coronary artery vasospasm
Acute coronary syndromes 
Anomalous coronary arteries
STEMI
Cocaine-associated chest pain
Non-STEMI
Digoxin toxicity
Unstable angina