angina: pain and discomfort

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Angina is chest pain that occurs when the blood supply to the muscles of the heart is restricted. It usually happens because the arteries supplying the heart become hardened 
and narrowed.

The pain and discomfort of angina feels like a dull, heavy or tight pain in the chest that can sometimes spread to the left arm, 
neck, jaw or back.

The pain is usually triggered by physical activity or stress and typically only lasts for a few minutes. This is often referred to as an angina attack.