Hello All: I know what you mean about dreading to take a shower. I have RSD in my left foot/leg and now my left hand/arm is sensitive as well.
I turn on an electric heater for about a half hour before getting in the shower and keep it on while showering. This helps to prevent being blasted by cold air when you get out. Also, when done showering, I open the door but stay behind the closed part for about a minute to allow the different air temps to blend. I do not like the feel of a towel on my RSD skin so I let it air dry and do not open the bathroom door until I am completely dressed.
Another thing I do is while washing my foot, I breathe like a woman in labor. For some reason this seems to help a bit.
I miss getting into a warm tub with a good book.
Regards, Lil