I have been doing PT for some time and have been getting progressively better in some areas, while worse in others. It seems my occasional total 4th and 5th finger numbness has given way to more consistent arm wide pins and needles going all the way up to the shoulder. I still have worsening weakness in my left arm when lifting very light objects outstretched, which seems to me like I have weak stabilizing muscles in my upper back? Seems I haven't lost strength when lifting more normal (slightly more heavy objects).

Have been told by PT I have way less guarding in upper back which is good, and have definitely made strides in improving posture and opening up my shoulders. Still having a hard time sleeping, and not letting my shoulders round inward but that's another story.

My question is whether or not pins and needles are good, versus outright numbness in a specific location. I saw this article:

http://www.smilingbackmethod.com/art...b=1&font=serif

Which seems to suggest it's good ?? for RSI, but I have my doubts if it's really just a ploy to sell another eBook. Not sure if I am better or worse trading occasional numbness in a specific location for constant pins and needles.

At what point should I be worried that I am doing permanent nerve damage? Are there are any signs I should be concerned with?