my 59 year old aunt has random light headedness and nausea. Her lips turn blue, she gets extrememly flushed and very warm. She gets down on all 4's with her head hanging down and this passes in about 15 minutes. Afterwords, she is exhaused. She's had lab work, an echo, and a 48 hour monitor and it seems normal. She and I are very worried and trying to see if we can see what else this could be.