Hi Tanner, welcome to the forum. I had a tens unit, still do but after using it for a couple of years (can't remember because it's been a long time since I used it) it was not helpful. It was more annoying to the pain. I was supposed to use it on my tight arm, neck, shoulder, but it never seemed to do anything for me. Back then, my pain was such, that nothing seemed to put advent in it. I've had better management the last few years, so I actually am able to tell when things do and don't work now. I too, like Renee mentioned, have a lot of numbness in my hands, but I always felt the TENS unit. Make sure you tell the PT what you are or are not feeling. To alleviate numbness at night, it used yo wake me up, I place a soft squishy pillow on either side of me. Just enough support to lay me lower arm and hand on, so they are elevated. Laying them at my side causes more swelling and numbness, so I elevate them gently. Works wonders. Takes up a lot of room in the bed though. My husband calls it my fort. LOL. I have definitely become the leading role in the princess and the pea. I need the pillows to be really soft and placed just right, so that my arm is only elevated from the lower area and hands, not the upper arm, that is uncomfortable and causes soft tissue pain problems in the AM, like a strain.

I use Arnica gel a lot. It does nothing for the RSD, it's a very cooling gel, when it's applied, so it can be difficult to get through application, but it helps so soft tissue issues, strains, pulls, aches. Does nothing for the RSD burn, but if you have peripheral aches and pains it is great. I used it for tendonitis pain for years, before I got RSD. For me, if I do any repetitive movement, reach to high up, have a stumble, I reach for the arnica rather than adding ibuprofen or Tylenol to the meds I already take. Ask your PT if they think it would be helpful for the swelling in your foot. If you want to try it, Whole Foods has it private labeled in their 365 line. Surprising good value, compared to anyone else who manufactures or packages it.

Good luck and I hope you find some relief.
Sylvia