A comment on infrared light:

Infrared lasers have been approve by the FDA to treat carpal tunnel syndrome and have been shown in studies to help TOS. The lasers are just a special kind of diode and aren't that expensive. I have seen a number of companies sell lamps with them.

The only problem is that often the consumer catalogs don't tell you how "strong" the light is (technically the flux of light). The laser light has been shown to have significant pain relieving properties above a certain dose of light and no effect below that dose.

in some states, you can get this treatment covered by worker's comp because it has been shown to be cheaper than carpral tunnel surgery.