Before I was diagnosed, and we all thought I simply had a badly sprained knee, I had TENS therapy and ultrasound. The ultrasound (I guess it was) heated my knee up, and it helped a little bit. Very little. Ok, straight up, it felt good while it was being run, as soon as it was turned off, it was as if it nothing had been done. But the TENS deal, well, I didn't know why, but it did work, nothing like a total recovery, of course, but it knocked the pain down probly by half for at least half the day, and sometimes I was 'cured' for the whole day, into the next. Frankly, I had forgotten all about it until I read this thread. I cannot thank you enough, a good friend of mine has one I can try out, so fingers crossed, I pray it helps. RSD's spreading down my leg, every now and then it's popped over to the opposite leg, so I am really hoping this stops it. Thank you. Later, Smoke