I've seen people post about feel as if they're fainting in their sleep. My friend is expressing something similar. She says nights are the worst and scariest. She will wake up multiple times from adrenaline surges if she does fall asleep, and other times during the night she can feel the blood draining from her head, heart feels weak as if it's going to stop, and feels an "impending sense of doom" as if she's dying. This happens every night! Has anyone else experienced anything similar and what has helped???? It doesn't matter what position or side she sleeps on, it always happens. Thank you!