Multiple things: Could be a problem with skin, nerves, muscle, shoulder, lung, heart, or stomach. See your doctor for a more thorough history, physical exam and further evaluation. If you sleep on your stomach you could have a neck strain that radiates pain to the chest or arm. Get checked out just to make sure.
Answered 8/29/2018
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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