Pat
I have had RSD for over 8 years now, and though I haven't noticed a change in pain with different foods, there is a definite change in pain level during changes with the weather (especially during or even near a storm), and also there is a proven pain increase with any kind of stress. RSD is an older name for this condition, as it was renamed a couple of years ago to Complex Regional Pain Syndrome. They have shown it to be a brain disorder, with many symptoms. Do a search for Complex Regional Pain Syndrome (CRPS) and you will find all kinds of info on it, although the info the last couple of years is different than what they thought the condition was before that time, so try and look for recent information, as some of the older info is now proven to be incorrect. E-mail me if you have any questions or want more info - I have quite a bit of info saved, especially the most recent reports on this condition. Best of luck!!