What is "SFN"? I've lived in autoimmune-land for 8 years now but I'm not familiar with that abbreviation.

Actually, MCTD is one of those rare autoimmunes that's rather cut and dried. There's a specific test for it. (RNP, I believe?) I don't think that things morph into MCTD -- you either have it or you don't.

That said, there are so many of these diseases that are related and overlaps are common. I had a great rheumatologist when I first got sick but since I moved to a new city, I haven't gotten good rheumatology care. The rheum. in my new city was awful -- so awful that many people stopped going to him and he moved away!

I had all of my records sent to me from my former, excellent rheumy and I'm now having to do my own detective work when things get worse. Luckily, I have an excellent internist who is willing to go above and beyond her pay grade to help!