Not quite sure if you'll see this since my reply is some time after your post...but just in case:
yes, extremes of heat or cold is very common with RSD. For me, my leg goes completely ice cold...at that point very little can be done to warm it up. Although I have RSD in my right leg...I am able to put a sock on my foot...although absolutely nothing can touch the area between my thigh and my ankle. Being able to put a sock on helps battle the cold to an extent, but not much. Some people with RSD have found that although they cannot have anything brush against the affected area, they can tolerate something "snug"...pantyhose for example.
As far as medications go, Neurontin seems to be the med of choice. It works about as well as it can. You may want to ask your doctor about Trileptal...that can work in addition to the neurontin. As for pain, there are many narcotics that are used, but there's also a slew of pain relieving medicines that are not addicting...celebrex, zanaflex (a muscle relaxant) and ultram to name a few. Ambien or remeron work really well as a sleep aid. But, also, remeron taken in higher doses can help overall with the RSD pain and symptoms...you may definitely want to check into that.
I hope this helps and if you have any questions, don't hesitate to ask. I will try and help any way I can. I hope your grandmother finds some relief!
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