If a doctor was doing research and he wanted to be sure that these dots were purely from RSD, then yes, he would include only those with RSD in his study to be accurate. Would you feel like the doctor was rude to not include someone with RSD and TOS (or something else)?? Or would you feel singled out?

No one said each member wasn't welcome or the members with other diagnosis' weren't welcome. Look at my posts again, you are missing the whole point, Joselita.