I've had heat waves radiating down my left leg from my knee towards my ankle for about 10 days and now it has moved to my right leg. Prior to the heat waves, I became aware of a tingling sensation on my left foot as though I was standing on a vibrating plate, or as though a mild current was passing through my foot. I still have this. I find now, 2 weeks later, that the heat seems to be increasing in my right leg. Not sure what this is. Please help.