I have been experiencing my right arm going numb for several weeks along with pain. It have been continuously getting worse. Now my arm stays numb but every 10 minutes I get pins and needles feeling as though it fell asleep. Originally my movement was impinged so I had a difficult time moving it and thought I have torn my rotator cuff again. Now I got some of my movement back but it seems to me that I have nodules or possible fluid/cyst in my arm. The nodules and fluid/cyst started more from from my elbow to shoulder. Now it has spread to my forearm and I am now experiencing the pain there. On a few occasions, there has been areas on my arm that has felt cold. I have also had sensations of something crawling inside of my shoulder area and had intense pain like bees were stinging me. I am concerned because I have seen three doctors so far and they have not been able to diagnose me. They have taken xrays and blood samples so far and found nothing. However, I think they are focusing on the wrong issue such as I had a rotator cuff tear 13 years ago and had 3 screws put in. Therefore, most of their test that involved xrays and blood samples was to determine if I have an infection with the area that has screws. Additionally, today I have intense sensations in my forearm and another lump has appeared. I am looking for insight as I am fearful this is something serious.