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A 19-year-old female asked:

Really bad upper back pain behind rib and down the left side what could be the cause of it? muscles?

1 doctor answer3 doctors weighed in
Dr. Edward Hellman
Orthopedic Surgery 30 years experience
Hard to say: Unless you injured it, it would be unusual to have really bad back pain from the muscles in your back. There are many potential causes some of which are musculoskeletal, but some which are not. A kidney infection, known as a pyelonephritis is just one example. Consider being checked. Thank you for the question.
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Last updated Jun 9, 2020
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