<s>[INST] I am having a constant dull nagging pain in my upper arm on the back. Lately I have also been having problems with tenderness around my knee area with no apparent explanation. Never had these problems before. Should I be concerned? What could be the potential cause? Thanks [/INST] Hi, Thank you for providing the brief history of you. A thorough Neuromuscular assessment is advised. As the pain is nagging and dull in the upper arm and back, i advice to get the neuromuscular assessment done. Post which an MRI of the cervical spine might be needed. As due to soft tissue injury and pinched nerve, the symptoms of such nagging pain arises and needs a thorough assessment. Also for knee, there might be a ligament strain or an early degenerative change in the joint which post assessment can be measured. Post which with simple medicine and physical therapy in 2-3 weeks you should be back to work.  Physical therapy will help you build the strength and also the joint mobility to the maximum. For detailed suggestion/queries/inputs/rehabilitation plan - contact me and I will be happy to help you. RegardsJay In Chat Doctor.  </s>