Thirteen years ago I was diagnosed with a degenerating disc in my lumbar spine, the result of an old injury. Yoga helped a lot to strengthen my back muscles and combat pain, but I still experienced some back pain and discomfort from time to time. I have been using the Photizo Pain Relief device on this area for less than a week now, and after a few days of use, have not had any lower back pain. It almost feels too good to be true, but indeed, this has been my experience. I will recommend Photizo to anyone needing relief from chronic pain.