I have the same pain in my upper left arm can’t raise my arm have weakness drop everything if I move to fast the pain is bad I can’t take it been taking naproxen and Motrin nothing helps haven’t been to dr no insurance I’m a nurse aide but can’t work don’t want to hurt someone if my arm gives out just looking for answers on how to stop the pain and get range of motion back any advice to help
You're really going to have to see an orthopedic surgeon and get some pictures taken for a diagnosis, or at least get it manipulated to see which movements cause the pain. It's most likely a tweaked muscle, but again, can't diagnose it yourself.