What is a heart attack, and how can I tell if one is about to happen?
A heart attack, also known as a myocardial infarction, occurs when blood flow to a part of the heart muscle is blocked, leading to tissue damage. Warning signs may include chest pain or pressure that radiates to the arm, neck, jaw, or back, along with shortness of breath, sweating, dizziness, or nausea. If these symptoms appear suddenly or persist, seek emergency medical attention immediately.