I was skeptical. My condition is complicated and chronic, consisting of sacroiliac joint inflammation, hip bursitis and mid-thigh pain, all on the left side. I've been treated with opiates, benzo-diazepines, muscle relaxants -- you name it. I could not tolerate the side effects, and the drugs didn't work very well anyway. I've also tried acupuncture, prolotherapy, exercise (which is good for other reasons), NSAID and menthol and capsaicin creams -- the first two help temporarily and the latter causes contact dermatitis. It took 10 days before I thought this little gizmo was giving me relief, but a few days later I was significantly improved. I still have far too go, but feel SO encouraged. I've done some more research, and found that LED light helps most people with neuropathy and even wrinkle reduction. Everybody's different, and for some this may not be effective, but I am absolutely thrilled. Note: although the battery is rechargeable, mine gave out after two charges, but that is not a deal-breaker, as replacements are easily obtained through the website.