Lack of use?: It might be due to the fact that you are not using your right chest muscle as much as your left side.
Answered 10/3/2016
6k views
C7 nerve root: Dr. Abe is right. Disuse is a common cause of muscle atrophy. You could also have a problem with compression of the C7 nerve root which does supply the pectoralis major muscle. You may want to check in with your doctor to have this further evaluated.
Answered 11/28/2017
6k views
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A doctor has provided 1 answer
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