As already mentioned, the chance of "remission" is most likely the younger you are.

The longer you have this condition and the older you are, the less chance of remission.

In general, CRPS is considered an incurable condition. Sucks, doesn't it.

I would absolutely be very WARY of any doctor that makes any kind of claims. All they can do is treat it aggressively using a multi-disciplinary plan. A single treatment discipline is not the way to go.

And with that doctor that is making claims, this friend of yours needs to comprehensively analyze the treatment plan that the doctor recommends. And get second opinions. And third. And fourth. No kidding. No kidding.

The one thing I have learned about CRPS is this. Please commit this sentence to memory. CRPS is among the most widely misunderstood medical conditions, even among professionals.

It took me 6 doctors alone JUST to get a diagnosis. And this doesn't even get into all the professionals I interviewed before deciding on my "team" of professionals for treatment.

Good luck to your friend!