I am sorry you are facing this. I hope the prednisone helps. I can relate to the anxiety that comes with flare ups. I am on anxiety meds to help but it only does to a degree. I try to self talk that I have had times of flare ups like it before and I get through. Also to take one day at a time or even 1 hour at a time. Sometimes a distraction even calling someone can help. It is hard to find balance with rsd to where you still try to live life the best you can but not over do it I know. Hang in there and feel better.