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Unstable Angina


Unstable angina is a type of chest pain that occurs due to reduced blood flow to the heart muscle, typically caused by the partial blockage of coronary arteries. It is considered a medical emergency, as it may signal an impending heart attack. Unstable angina differs from stable angina in that it occurs unpredictably, often at rest or with minimal exertion, and may not be relieved by rest or medication.