I took what I call the prednisone dump for a few days a long time ago after an encounter with poison ivy. I got a shot and then took oral meds seven pills the first day, six pills the second day, and so on till I had taken all of them.
I don't recall any weird dreams, though.
I had similar regimens of Prednisone for eczema back when I had it pretty bad. However, my doses were 6 the first night and then diminish by one on subsequent nights. The first 48 hours would be sleepless except for maybe a one hour nap somewhere.
Eczema is an itchy skin condition that I would generally have show up on my chest. Taking the Prednisone would get rid of the rash, but I would turn red all over and itch all over instead of just my chest. I was always glad to get to about day 4 of the 6 day regimen.
Switched to a shot of Kenalog (spelling?), but it would do the same thing as far as getting red and itching all over, but at least I wasn't in a state of sleeplessness.
I don't recall any weird dreams though, with either one of the drugs.