@sue15 one additional thought, my back pain is helped some by medical grade red light therapy. Everyone is different and this pain, while it’s caused by my degenerating spine, the pain is mostly muscular. Having said that, the red light has helped some with my hands & the joint pain, but as red light is supposed to be more effective for muscle pain as I understand it, perhaps the positive effects are placebo effect. But I’m not going to question it..haha!