I was diagnosed with fibromyalgia a few years ago. I also have degenerative disc disease in my back. I was prescribed a TENS unit and have found it helpful. For the past few months I haven't been using it because I needed to replace the electrodes but I've done that now and the unit is back in business. The neagtive I would say about it (at least for me) is that as soon as I turn the unit off the pain comes back. I feel pretty good when it is on but I've never experienced lasting relief. I think it's definitely worth a try.