What is angina?

Angina refers specifically to chest pain or discomfort that occurs when the heart muscle does not receive enough oxygen-rich blood. This typically happens due to reduced blood flow through the coronary arteries, which can be a result of atherosclerosis (the buildup of fatty deposits) or other cardiovascular conditions. This lack of adequate blood circulation prompts the heart to signal distress, producing the characteristic pain associated with angina.

In this context, the term captures the essence of why angina occurs: it is fundamentally linked to the heart's demand for oxygen during physical exertion or stress, which outstrips the supply due to compromised blood flow. Recognizing angina as a symptom of potential heart disease is crucial for diagnosis and treatment to prevent more severe cardiovascular events, such as heart attacks.