Pain radiating down left arm

  What is the actual cause of pain radiating down
  the left arm that is often seen in heart attacks?
Dear Paris
The way the body is wired together, the nerves sometimes get confused where the source of pain originates. Pain radiating down the left arm during a heart attack is coming form the heart, but the body perceives it as originating from the arm.
I hope this information is useful. Information provided in the heart forum is for general purposes only.  Only your physician can provided specific diagnoses and therapies.  Feel free to write back with further questions. Good luck!
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