I've used an infrared sauna, the type that is large and you sit in it. I felt it helped with my swelling and stiffness. I used it in conjuction with a few other therapies at the time. I considered buying one at one point, but I'm in a rental so it doesn't make sense. Not sure about the type of unit you're talking about? Those tent type ones may or may not help. If you are near a large city, you could maybe find a rental at a spa or tanning salon.

I actually bought an infrared heater that works well in winter to heat my limbs when they get cold.

The hothouse Iam talking about is like a small dome that goes over your body and is about a foot and a half long and you just lay down and place it over the area you want to heat. Many are using it for cancer to shrink tumers.

The website I got info about an RSD patient using it is

http://www.energywellnessproducts.com/rsdmarastory.htm

Niki

To compare prices -

http://duckduckgo.com/?q=price+comparison