The only dreams in which I've had emotions that were stronger than reality were nightmares -- I shouldn't say "only" because I've had a couple of extreme sex dreams, but lots of nightmares that were stronger than any panic attack. I've always suspected that they might _be_ panic attacks that just happened to hit the right biochemistry when I was asleep, and my dreaming brain looked around for something to cause the fear, didn't find anything, so made something up. I don't believe I've ever had "waking dreams" that were any more real-seeming than "daydreams".
I have plenty of strong emotions when I'm awake.
I have some very vivid dreams as a side-effect of antidepressants -- I'm not sure they're really a "side effect", but maybe a product of my nervous system functioning better. They aren't a matter of stronger emotion, but more of brighter, more memorable colors, and more reasonably "plotted" -- they'll be a whole story, where ordinary dreams are just fleeting images in succession, that fade fast when I wake up. When one of the vivid ones also happens to be a nightmare, though, it's a dilly of a nightmare! A couple of times when I've had those, I've taken Xanax at bedtime for the next two or three nights, but I quit then, because even though it makes a very nice sleep, I don't want to get addicted to it, or get so accustomed to it that it doesn't work when I need it.
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Asperges me, Domine