Angina, also called angina pectoris, is the medical term used to describe chest pain or a feeling of tightness, heaviness and discomfort in the chest as a result of inadequate blood oxygen supply to the heart muscle. The insufficient supply of oxygen is mainly caused by narrowing of arteries that carry blood to the heart (coronary arteries). It’s the main symptom of coronary heart disease and is commonly mistaken as a symptom of indigestion. Angina often occurs when a person is under emotional or physical stress. Although pain is commonly felt in the chest, many a times pain in shoulders, arms, neck, throat, jaw or back is also experienced. There are different types of angina. The most common type of angina is stable angina which suggests the likelihood of getting a heart attack in near future. Unstable angina is severe than stable angina and requires emergency treatment. In this section, you’ll find articles including the risk of heart attack in night shift workers, angioplasty and tips to keep your heart healthy.