RSD and RND are the same thing. I am guessing that your daughter received her diagnosis from Dr. Sherry, as that is what he calls it. My 17-year-old daughter was diagnosed 3-1/2 years ago, and I would be happy to share what we have learned along the way. You can send me a private message if you prefer to correspond that way. Wishing you and your daughter the very best!
Jeanne