I have one..... I loved it for my myofacial pain, low back problems and fibromyalgia.
Then, when my RSD struck my shoulder... I was still trying to use the TENS. I could not do it. For a while, I could still use it on my lower back, but as the RSD began to spread across my shoulders, I could no longer use the TENS at all.
Now, it's over a year since I have tried using it. Just a few days ago, I charged up the batteries thinking I might try it again. My pain is somewhat less than it was in the beginning, even though the RSD has spread to a lot larger area.
I figured I would know pretty quickly if I could take it.
Jules