What is unstable angina?
Unstable angina is a type of chest pain caused by reduced blood flow to the heart. It is a form of acute coronary syndrome, a group of conditions that includes heart attack and other conditions that can cause chest pain due to reduced blood flow to the heart. Symptoms of unstable angina can include chest pain that is worse than usual, pressure or tightness in the chest, and shortness of breath. Treatment typically includes medications, such as aspirin, beta blockers, and nitrates, as well as lifestyle changes, such as quitting smoking and exercising regularly.