I have the exact same symptoms and for now my 'trick of the moment' is to bathe my feet/legs is cool water with Epsom salts, I do this for as long as I can, approx 1hr at a time.
I also have gel filled cold compresses that I keep in the freezer and use when I can't get my feet wet, this works in bed- I call it my cold water bottle instead of the hot water people in my country use frequently.