Angina pectoris or angina is temporary chest pain or discomfort as a result of decreased blood flow to the heart muscle. Angina is not a heart attack, but it is a sign of increased risk for heart attack. Angina may be stable (develops during physical activity, lasts five minutes or less and is relieved with rest) or unstable (occurs during periods of rest, lasts longer, and symptoms may be more severe).
Your doctor may perform an electrocardiogram (ECG), a stress test without imaging or blood tests to help diagnose your condition. Additionally, chest x-ray, chest CT, coronary CT angiography, cardiac MRI, coronary angiography, echocardiogram or stress test with imaging may be performed. Your physician may recommend certain lifestyle changes in addition to other treatment options, such as medication, surgery, or angioplasty and vascular stenting.
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Good explanation