My friend blacked-out while taking a luke-warm shower. When she came to, she crawled to her bathroom sink to splash some cold water on her face, only to blackout again. This time, she awoke to puke all over her. She cleaned herself up and walked across the hall to go to bed only to black out again. In total, about 2 hours were gone. She doesn t remember anything that I haven t already said. What could ve caused all this?