Watch this helpful animation to learn more about chronic angina, a symptom of coronary heart
disease. Chronic angina is chest pain or discomfort brought on by physical or emotional
stress. It may feel like indigestion, or it may leave you out of breath or tired.
Angina is caused by narrowing of the coronary arteries, which reduces oxygen-rich
blood flow to the heart. Angina is your heart's way of telling you that it's not
getting the oxygen it needs to work properly.