I honestly think its from that deflection coil voltage bite that the SS Sylvania gave me a year ago, I never really got over that and that is when it all started. The doc does not by it, and says its from lifting weights (I do a little of that but have for a long time and never had a problem).
When the Sylvania got me it was so violent that my arm just locked up and I had to pretty much pull away, drawing a nice flaming arc off my palm. It felt like the shock was still going on for at least an hour after that, and from then on I had pain.
anyway at least the MRI was able to show the tear (about 15%) so I hope he is right and it will heal on its own. That SS deflection is a killer....