Angina Pectoris is a type of chest pain caused by reduced blood flow to the heart muscle. It often feels like pressure, squeezing, or a heavy sensation in the chest. This condition typically occurs during physical activity or emotional stress and usually subsides with rest or medication. The primary cause of Angina Pectoris is coronary artery disease, where the arteries become narrowed or blocked. It can be classified into two types: stable angina, which follows a predictable pattern, and unstable angina, which is more unpredictable and may occur at rest. Proper management is essential to prevent complications.