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Symptoms
Angina is chest pain or
discomfort that occurs when your heart muscle does not get enough blood.
Angina may feel like pressure or a squeezing pain in your chest. The
pain may also occur in your shoulders, arms, neck, jaw, or back. It may
also feel like indigestion.
Angina is a symptom of coronary artery disease (CAD), the most common
type of heart disease. CAD occurs when plaque builds up in the coronary
arteries.
Cause
Angina is caused by
reduced blood flow to an area of the heart. This is most often due to
coronary artery disease (CAD). Sometimes, other types of heart disease
or uncontrolled high blood pressure can cause angina. In CAD, the
arteries that carry oxygen-rich blood to the heart muscle are narrowed
due to the buildup of fatty deposits called plaque. This is called
atherosclerosis. Some plaque is hard and stable and leads to narrowed
and hardened arteries. Other plaque is soft and is more likely to break
open and cause blood clots.
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