Yes, I have heard of it.
I have RA, and mentioned this to a salesman when I purchased a bed. He in turn told me he had Palindromic RA, and, of course we started comparing symptoms, etc. We even shared a common rheumatologist. He had just started on a new biologic, as (I think) Humira had stopped working for him.
But, from what he told me, is that, although it is horribly painful when left untreated - as is my RA, it doesn't however actually cause the joints to deteriorate. I may have misunderstood him, or he may have been completely wrong.
I had my RA misdiagnosed by an incompetent doctor as OA because I didn't have Rheumatoid factors show up in blood tests. By the time I got an accurate diagnosis my knee joints had completely gone (double knee replacement) and I had physical distortion in my hands, elbows, shoulders, etc.
I can only recommend that you find a Rheumatologist you trust and get on some medication as soon as possible, as well as taking good pain killers. There are no prizes for being stoical, and being the most miserable person you know is not much claim to fame. Been there, done that. I became the sort of person who when asked how I was, would actually tell people. Now that's pathetic.
Sadly, when people talk about Rheumatism, I think they often mean OA which, whilst not much fun, is probably not a patch on the unremitting grinding pain and misery that RA can be. It changes you completely.
I know we don't have the same illnesses, but they are similar, and if I can be any help, let me know.