This might sound mad but try it. It works.
Put your feet in a large bowl of ice, you'll need to put water in too so you can get your feet properly submerged.
Leave feet in the iced water for 20 minutes. You'll probably not be able to, but leave for as long as you can.
Repeat this every day for a week gradually building up to the 20 minutes.
Thats it. It's a magic cure!
Please try it and tell me how you get on.