Welcome to the forum. This is a great place to learn different things about the disease and the process. It is also been a great learning tool for me on what to do or not to do. You will meet great people and friends here as well.

As far as sympathic blocks, it is a good standard first step and it will also help the dr. determine whether it is pn or crps. For me the first set was 3 weeks apart and I did not get any long term results only a couple of hours. But when we did it one week apart I had more long term results.

It is scary but for me it was worth it in the end. Again, welcome to the group.