I was originally told I had a frozen shoulder b/c of the shoulder pain and decreased range of motion. Had all kinds of x-rays, MRIs that were negative. I saw a neurologist because I started having numbness in my hands/arms. Because of my symptoms he was pretty sure I have TOS. My EMG/NCS were negative, but I had a doppler study that shows that my pulse diminishes when I hold my arm in different positions. Not sure how 100% conclusive this is for TOS, but it isn't normal