Tissue death from reduced blood supply.

When to seek immediate medical care

See a doctor immediately if:

  • Pressure, tightness, pain, or a squeezing or aching sensation in chest or arms that may spread to neck, jaw, or back
  • Nausea, vomiting, belly pain, or blood in stool
  • Slurred speech, paralysis, or loss of pain or temperature sensation
  • Shortness of breath, lightheadedness, or sudden dizziness
  • Sharp back pain that may radiate down legs

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