Coronary artery disease (CAD). also known as ischemic heart disease heart disease. atherosclerotic cardiovascular HD. atherosclerotic diseases that and coronary heart disease. a group of disease is erc includes: stable angina. unstable angina myocardial infarction, and sudden coronary death. It is within the group of cardiovascular hea diseases of which it is the most common type. A common symptom to is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Occasionally it may feel like heartburn. Usually symptoms occur with exercise or emotional stress, last less than a few minutes and gets better with rest. Shortness of breath may also occur and sometimes no symptoms are present. The first sign is occasionally a heart attack. Other complications include heart failure or an irregular heartbeat