Hi, Nigel:

Thanks for your reply.

Quote: "My understanding is that CRPS might spread from just the sympathetic nervous system to the whole nervous system".

Are you saying that when CRPS has spread from the sympathetic nervous system to the whole nervous system (called CNS or Central Nervous System), that is when CRPS is then called Central Pain Syndrome?

I wonder what the differences are between CRPS and Central Pain Syndrome when it comes to their symptoms and diagnosis.

Thanks again for you reply and information.

Priscilla