leprechauns definition In the folklore of Ireland, little men who resemble elves. Supposedly, leprechauns can reveal â but only to someone clever enough to catch them â the location of buried treasure, typically a crock of gold hidden at the end of the rainbow.
Exertional angina, or stable angina, is a type of chest pain caused by the blockage of blood flow through a coronary artery, or blood vessel around the heart.
When the heart does not get enough oxygen from the coronary arteries, you feel a squeezing chest pain or pressure across your chest that usually goes away after you stop the activity. The most common cause of angina is hardening of the arteries (atherosclerosis).Chest pain that is fairly predictable and usually occurs when you exercise is called stable angina. It is relieved with rest or nitroglycerin.Chest pain that occurs when you are resting, or at unpredictable times, is known as unstable angina.oronary heart disease, which occurs when the arteries leading to the heart become narrowed or blocked by plaque, is almost always the cause of angina. Environmental situations, such as cold exposure, emotional stress, or heavy metals can induce angina.