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.
Causes. Angina is usually due to heart disease. A fatty substance called plaque builds up in your arteries, blocking blood flow to the heart muscle. This forces your heart to work with less oxygen. That causes pain. You may also have blood clots in the arteries of your heart, which can cause heart attacks. Other, less common causes of chest pain include: A blockage in a major artery of the lungs (pulmonary embolism) An enlarged or thickened heart (hypertrophic cardiomyopathy)