Positional: Generally this is a sleep positional issue with tightness and muscle spasm around the nerves under the armpit. Can be from neck also. If it goes away quickly then needs to work on some thoracic outlet stretches with a therapist. If persists should get checked out.
Answered 4/11/2014
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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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