I get sudden serve pain starting on the left side of my face, down the shoulder, under the arm pit and upper arm, when it happens my teeth even hurts. Just walking can bring on an attack. It started September 23, 2015. I had several test ran and no seems to know what s going on. I had CCT, MRI, EEG, X-ray done and other test I can t even name. I ve had cortazone shots between the C4 and C5. I m seeing a nurologist and recently he sent me to see a hematologist. I m tired of pain pills, lack of sleep and hurting for no reason. Please help me! What can be going on.