+Angina is a chest pain, a warning from the heart. It often signals the heart muscle needs more [Blood Flow](/wiki/blood-flow) or [Oxygen](/wiki/oxygen) than it receives. This discomfort, a pressure or squeezing, is a key symptom of underlying [Heart Disease](/wiki/heart-disease).
+## See also
+- [Heart Attack](/wiki/heart-attack)
+- [Chest Pain](/wiki/chest-pain)
+- [Artery](/wiki/artery)
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