Heart disease can affect any of the structures of the heart and may affect more than one at a time. Heart attack is an imprecise term, and may refer to angina pectoris (a symptom of pain originating in the heart) or to coronary artery thrombosis, also called myocardial infarction.
Any pathological condition of the coronary arteries, heart valves, myocardium, or electrical conduction system of the heart.