hi and Welcome,

I am so glad to hear the blocks put you in remission. Wow! what a blessing!

So I am going to go out on a limb here and say the ankle thing does not sound like CRPS to me. If you only have symptoms when the ankle is in a certain position that is just screaming nerve or musculoskeletal impingement issue.

cortisone injections with lidocaine can cause coolness and mottling so that doesn't sound too alarming.

With the bone popping, etc they should absolutely check out all possibilities. You don't want to throw all symptoms into the CRPS basket and miss something that needs to be treated. Bloodwork for RA should not be a problem to get run. If it is order it privately. Healthcheck and Private MD Labs can do it for under 200. Since CRPS is a diagnosis of exclusion don't sell yourself short.

I hope you find answers and relief soon! Sending Healing Love, Littlepaw