Angina is chest pain or discomfort caused when your heart muscle doesn't get enough oxygen-rich blood. It may feel like pressure or squeezing in your chest. The discomfort also can occur in your shoulders, arms, neck, jaw, abdomen or back. Angina pain may even feel like indigestion. In addition, some people don’t feel any pain but have other symptoms like shortness of breath or fatigue. If these symptoms are due to a lack of oxygen to the heart muscle, it’s called an “anginal equivalent.”
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