Hi TC - Yes, for many years since meno, experienced the ghastly adrenaline rushes, with and without accompanying flushes - at night too - and I'm on low dose HRT. I try hard to control it with deep breathing exercises, thought diversion, rescue remedy, brisk walking helps the most, magnesium - I throw everything at it. For reasons I've not been able to fathom, sometimes worse than others, very jittery too.
What do you do to try and calm the horrid feeling?