Burning pain??.....some questions for you..
Do you have any hyper sensitive skin, to touch, fabric or breezes?
Has RSD /CRPS been looked into??
I know fibro includes some skin sensitivities , but RSD/CRPS can be extreme with sensitivities & burning feelings also skin colors and texture changes and swelling.
RSD/CRPS pain is often out of proportion to any injury that might have preceded it.
Often patients are told it's in your head by drs that do not know much about it.
I don't know if any of those fit for you - but we have a RSD forum here if you'd like to learn more about it-
http://neurotalk.psychcentral.com/forum21.html