What Causes Burning Sensation In The Head Radiating Towards Feet?

I was sitting in bed, crocheting. All at once the inside of my head felt like it was on fire. The sensation ran down my body to my feet. My skin turned red all over, but my hands got real white, like no blood flow. I had to go outside to cool my body down and put warm wash cloths on my hands. My skin is still red, but my hands are getting some color to them. I am just sitting in my bed to try to relax, but I still feel like my body is on fire in places. We have a large history of strokes in my family. This has scared me. what would cause these symptoms?