Hi, Jan.

I have never heard of this before. Perhaps your doctor is confused because both RA and FMS are immune system problems. My sister has RA, but never had fibro symptoms. I have fibro, but don't have RA (yes, I've been tested). Althought it is not uncommon for a person with one autoimmune disease, to develop another. Especially if the first one isn't figured out. So, you might want to find a doctor who has more experience with this stuff. A rheumatologist may be beneficial, but only if they have enough time in the trenches.