Hi Nicki,
Thanks for your help. A couple do have RF positivity (myasthenia gravis and Churg Strauss. I'm not sure if there are others).
Sorry to everyone for impeding (I mean that sincerely).
Hi guys,
I've been prowling the web for people with a positive rheumatoid factor, muscle weakness and no diagnosis --- I found at least five people with that combination here.
If any of you have since managed to get a diagnosis, could you please post what that was, as my doctors are at a loss...