Angina is a symptom of coronary artery disease, characterized by chest pain or discomfort due to reduced blood flow to the heart muscle. Often described as pressure, squeezing, or aching across the chest, angina can also be felt in the shoulders, arms, neck, jaw, or back. It typically occurs during physical exertion or emotional stress and is relieved by rest or nitroglycerin. There are two types: stable angina, predictable and managed with medication and lifestyle changes, and unstable angina, more severe and unpredictable, signaling a possible heart attack. Early diagnosis and treatment are crucial to manage symptoms and prevent further heart complications.
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