I've seen lots of things talking about speculation that CRPS is autoimmune related but nothing so concrete before. It made sense to me though, at least in my case. I was an undiagnosed celiac at the time my symptoms started and while it took an additional two years after my celiac diagnosis to get my CRPS diagnosis, my swelling did calm down after I was gluten free. I won't be surprised if they can make a definitive link.