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.
Unstable angina is the second most common angina type. This is a dangerous condition that requires emergency treatment. It occurs more often in older adults and is a sign that a heart attack could occur soon. In fact, 10 to 20 percent of people with unstable angina symptoms will likely have a heart attack.table angina is the most common angina type. It can also be referred to as exertional angina. With exertion, like walking up a hill or climbing stairs, the heart works harder and needs more oxygen. If it can't get enough oxygen, a person develops symptoms of angina.