Has anyone else had a difficulty with differentiating origin of pain between C5-C6 impingement and possible other dx of Thoracic Outlet Syndrome or rotator Cuff tears? I have a positive EMG for impingement at that area, but symptoms are not standard. I have no neck pain really... but my shoulder and upper arm have both banded pressure type pain and pinpoint burning/sharp pains. Sometimes there is radiation to my wrist, sometimes not. Any ideas?