Hi Lisa, and Welcome to this warm group of friends. There is a lot of combined knowledge here, caring, sympathetic friends.
I have had RSD 15 years and full body and internal. Full body is sometimes also called generalized. all limbs-spine. hands, feet, Internal means internal organs. Most on here talk about the pelvic region. One of the symptoms is heat, sweating. The inner thigh to the touch can be red and hot. lower back, butt- hot to the touch. Also burning inside. Can have rash on the outside of pelvic area. I also have neck pain and terrible headaches. I do believe have kidney involvement, need to get another check up.
I got RSD following surgery. It is a common cause. That is also why when we already have RSD, surgery is a huge risk. Please do your research before any procedure.
A website for RSD is rsdrx.com Dr. Hooshmand from Florida is retired, but has his website up and very informative. If you have any questions, please PM me (private message) and I'll try to share anything I can. One of your new friends, loretta