There are central pain syndromes (in the head) and peripheral ones.

Is your pain only in your feet?

What drugs are you on? Do you use a calcium channel blocker?
These are used for blood pressure. And can cause Erythromyelgia.

The cracked and bleeding are a big concern. Have you been evaluated for RSD?

Overuse of the mineral ice may be defatting the skin. Taking essential fatty acids in the diet/by mouth may improve the skin. You may be reacting to something in the Mineral Ice also that is causing some reaction. I'd stop using it for now.

Have you tried lidocaine? There are gels you can apply, or patches. With bleeding skin however, this limits their use.

Do the feet burn more in one place or all over? Do your hands burn too? Most PN's affect other body parts. When localized like this it implies some trigger.

There are metabolic things to help. Thiamine in high doses sometimes helps people with burning. A special form called
benfotiamine is even better.

I would get a serum B12 run to see if you are low. Also a vit D level (you can get them at the same time.) Very low B12 will make nerves act up and cause pain.

Were your feet always like this? Even before the accident?
If so that implies another cause that is overlapping your injury.

Please visit our PN forum, and RSD forums. There are people there getting hyperbaric oxygen at RSD and also at PN there are people trying various interventions to make pain less.
example:
http://neurotalk.psychcentral.com/thread54186.html

Try to hang on for a while longer...I know it is very hard, in the place where you are at now. Perhaps one of us will be your answer.