Multiple things.: If it appears to be tenderness of the rib cage, you may have an inflammation of cartilage called costochondritis. If the pain is deeper than that and feels internal, it could be in the lung, or liver. I suggest checking it out with your doctor.
Answered 4/16/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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