I use a red light torch (looks like a little flashlight). I’ve used it on my feet and toes but am not sure about its efficacy because my numbness ebbs and flows. But I have found that using it once or twice per day on my slightly numb left hand does make a difference. I can just hold the torch in my hand against the numb area as I walk around in the morning. I shared it with my cousin for her knee arthritis and she said it made a big difference and she’s going to get one too. So the red light does work on inflammation and I think we’ll be seeing more studies on this.