what type of disease is coronary heart disease
Coronary artery disease Coronary artery disease (CAD), also known as ischemic heart disease (IHD),[13] refers to a group of diseases which includes stable angina, unstable angina, myocardial infarction, and sudden cardiac death.[14] It is within the group of cardiovascular diseases of which it is the most common type.[15] A common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw.[4] Occasionally it may feel like heartburn. Usually symptoms occur with exercise or emotional stress, last less than a few minutes, and improve with rest.[4] Shortness of breath may also occur and sometimes no symptoms are present.[4] In many cases, the first sign is a heart attack.[5] Other complications include heart failure or an abnormal heartbeat.[5]