Has anyone else experienced a severe burning sensation? Mine happens in my legs. It feels like I'm burning from the inside out. It comes on suddenly lasts about 5 minutes, it is from my butt down to my toes. It feels like my leg is in a campfire. Unfortunately when this happens my other leg has severe pain and cramps up and freezes like a statue. I have been lucky enough that the 5 or 6 times it has happened I have something to lean on or someone to help me as I can[t use either leg. The burning is extremely painful and very draining.