<s>[INST]I ve been having stabbing pain in my shoulders and upper back. There s also been super unusual weakness in my upper arms. I m feeling severely fatigued as well, I thought maybe that was Thyroid related, but my primary care physician checked all basic labs and says Thyroid is normal. I do have neck and spine problems if that helps.[/INST]Hi.noted history of stabbing pain in shoulders, upper back and weakness in arms along with history of neck and spine problems. It is best if you consult with a doctor, preferably a neurologist or an orthopedic/spine surgeon, for physical examination and clinical evaluation. Nerve impingement of different etiopathogenesis must be ruled-out. Diagnostics (such as MRI, x-ray, ct-scan) and management (medical and/or surgical if indications are found) will be directed accordingly. Hope this helps. Good day!!~ Chat Doctor. </s>