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Angina

Angina refers to chest pain, the most common symptom of coronary artery disease. It occurs when a decrease in blood flow reduces the amount of oxygen getting to the heart, which usually results from plaque buildup on the walls of the coronary arteries that carry blood to the heart. As the heart works harder to continue pumping blood, lactic acid builds up in the muscle and causes pain. Angina may be described as discomfort, heaviness in the chest, pressure, aching, or burning, and it may be mistaken for heartburn. Usually felt in the chest, angina also may cause pain in the arms, shoulders, back, neck, or jaw.


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