Cardiology Questions Answered by Verified Cardiologists.
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While it is possible that heart pain can be felt in the back, it is more common that pain in the upper back that radiates down the back of both arms is musculoskeletal in nature. If there is tenderness when you press in the area of the pain or if there are certain movements that exacerbate the pain, then it is more likely that this is musculoskeletal, and it would be reasonable to first try to manage this at home, such as by taking acetaminophen to see if it relieves the pain.
It is also possible that acid reflux can cause back pain that can radiate to the arms, and reflux symptoms frequently are worse first thing in the morning. If she is having any associated heartburn, then it would be reasonable to first try some liquid antacids to see if it helps.
If she has no tenderness or heartburn, then would be more of a concern, and it would be appropriate for her to be seen emergently.
If I can provide any additional information, please let me know.
Please let me know if I can provide any further information.