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Health A-Z

Medical Content Created by the Faculty of the
Harvard Medical School

Angina

What Is It?

Angina is discomfort or pain in the chest that happens when not enough oxygen-rich blood reaches the muscle cells of the heart. Angina is not a disease, but a symptom of a more serious condition, usually coronary artery disease in which the vessels that supply blood to the heart become narrow or blocked. Coronary artery disease is usually caused by atherosclerosis, a condition in which fatty deposits (called plaque) build up along the inside walls of blood vessels. Although angina most commonly affects males who are middle-aged or older, it can occur in both sexes and in all age groups. Angina also is called angina pectoris.

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