I have- I had around 40 treatments "dives (technically)"-with some success! It didn't send my RSD into remission but it did significantly reduce the size and location of areas of my pain and swelling, reduce the blue hands/temperature and after each treatment I had never felt so full of energy in my whole entire life as I did when I came out of each treatment. I like to think of it like a battery recharger. What else would you like to know? There are different kinds of chambers, treatments- not all are equal.What else would you like to know? I still have my bad days and even though it didn't take it away completely, I would recommend giving it a try- not invasive and painless, just time consuming, but you can sleep or watch a video, listen to music or talk to the nurse/doctor. I am willing to try just about anything at this point, even if it only amounts to some reduction.