I have fibromyalgia, so I deal with pain in my neck and upper back pretty much all the time. I've tried a lot of things looking for something to just cut the tension. Sereni Stim does it with heat and gentle e-stim, right where I need it. It's easy to put on, easy to use, and every time — it kind of catches you, and you just have a moment of relief. That's what we're all looking for, isn't it? A moment of relief.
Not enough history yet to show a trend.