Hi cana,
Sounds like it could very well be CRPS.
One does not need to have every symptom to be raided by this monster.
While I was reading your post I could relate to a lot of your issues. The tingling and twitching sounds all to familiar to me. I do swell at times but not often. I get very bad seizures too. Almost to the point of a fit. I also get internal vibrations. Especially after a Gabapentin dose (900 mgs. 3 x a day, 2700 mgs. in all). Along with other cocktails.

Jennijojo,
The only good denial is a river. We must realize our condition and meet it head on.
Color changes, swelling, red and blue color variation is all part of it. It's good to be strong but as we all know there's no known cure yet but treatment is the next best thing.
I wish all the best for both of you in this battle...