Thanks for writing to us.
in the right hand along with the muscle weakness
is likely to be related to a nerve root compression
at the level of axilla due to tendonitis
in the area. An MRI will help in the proper diagnosis.
I hope this information has been both informative and helpful for you. You can consult me again directly through my profile URL http://bit.ly/Dr-Praveen-Tayal
Dr. Praveen Tayal