When it started to spread to the left foot my doc ordered a sympathetic block ASAP (as in w/in a week or two) and it stopped it in its tracks. SO it hasn't moved past just the heel. But yes, bright red, hot, piercing tingles that are so painful. So IF you can, you need ASAP block to halt the spread. You can't make it go away, but you can keep it from moving forward if the doc will act swiftly and aggressively. Also, do what you can to be aggressive PT wise. I.e. don't let it tell you not to use it (whatever is getting red/etc.) Cause as we know if we stop using the area it only gets worse. So I made myself treat that foot normally, keep walking on it etc.

I don't remember where I read it, but I have read more than once about CRPS/RSD affecting eyes/vision in some people.