<s>[INST] I have this shooting pain that has traveled from the back of my neck down to the top of my shoulder. This is on my right side. Now, today all day I have had limited mobility in my right arm and the pain has gone to the center of my shoulder. Any ideas? It hurts so bad!!! [/INST] HiTake Myospaz tab twice a day,apply voltaren gel after fomentation.wear a cervical collar in daytime.It should be okay soon, otherwise consult orthopaedic doctor ,x-rays and MRI.Don't use high pillow or do any strenuous work.support arm in a sling. </s>