A member asked:

2 weeks ago i flipped themattress as required every 6 mo, woke up with left back/shoulder pain when moving/breathing.xray showed clear lung& chest.why?

A doctor has provided 1 answer

Muscles: The most common cause of this would be a muscle strain. This would not show up on x-ray. The xray can evaluate your bones and your lungs.

Answered 4/25/2014

5.1k views

Thank

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