Hi, keep smilin and tomcrps:

I have full body RSD (CRPS). When I feel icy cold running through my blood vessels and when this type of RSD flare-up or attack gets very violent, I have the feeling I am breathing icy cool air, especially with each inspiration (deep breathe). The problem is not as bad with each expiration. I do have mid-back pain also, but it is my lower back that is concerned.

Does it mean the full body RSD is not external only anymore, but is starting to become internal also? After all, it is the lungs that are doing the job of breathing, so this is why I thought RSD was becoming internal full body RSD, as opposed to external full body RSD.

Keep smilin, you call this "chest CRPS"; I call this "lungs CRPS", but in the end, it is all the same, because the lungs are in the chest. Correct me if I am wrong.