Harvard Heart Letter

Heart attack warning signs

Chest pain is only one of the possible signs of an impending heart attack or sudden cardiac arrest. If you notice one or more of the signs below in yourself or someone else, call 911 or your local emergency number right away.

  • Uncomfortable pressure, squeezing, fullness, burning, tightness, or pain in the center of the chest

  • Pain, numbness, pinching, prickling, or other uncomfortable sensations in one or both arms, the back, neck, jaw, or stomach

  • Shortness of breath

  • Sudden nausea or vomiting

  • Lightheadedness or dizziness

  • Unusual fatigue

  • Heat/flushing or a cold sweat

  • Sudden heaviness, weakness, or aching in one or both arms

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