In Belgium they tend to first use Calcitonin injections (typically first stage RSD) and for later stage RSD they tend to use Bisphosphonates. This is the non pain specialist route, though. Pain specialists will give medications a go and later will start talking about nerve blocks, they sort of go the US route.

Maybe you could research it, and ask your doctors about it. I don't know whether they are familiar with these types of treatment; in the US it's not often talked about, if at all.