long explanation so I'm going to put this under a readmore so skip on by if you don't care about emotional / personal junk.
i once had one where i was being chased by a creature that had no physical form or visible form either, it was toying with me rather than killing me. it would move by taking possession of the bodies of anyone near me and once inside would begin to violently twist them from the inside outwards this would cause their flesh to tear and bones to splinter and various faces and rushing shapes to bulge from their skin. this dream was far too realistic and looking into these peoples eyes and hearing them scream as this being tore them apart in the most unnatural bending and twisting motions was mortifying. i would try to warn people to stay away from me as i tried to escape but it was like nobody could hear me. eventually i was cornered and i met the same fate.
I had another where i was in an endless sunny field and found a man sitting by himself. when i asked him what he was doing he turned to look at me and he had no face ( kinda like slenderman ) he then proceeded to lunge at me and began to choke me until i died... the dream itself then changed in perspective like i was in some sort of 3rd person view and i watched as he buried my body in the field. he would go to this hut ( i assumed was his home) and every day he would return to where he buried me and apologize profusely. the rest of the dream was simply this repeating day in day out until i woke up.
one of the most unnerving ones ive had was that i was in some kind of convention for scientists / doctors or something. i was in the wrong place and i had this really bad feeling and urgently needed to leave but i could not find an exit. as i was searching a man in a labcoat grabbed me from behind and began injecting me with some kind of drug that relaxed my body but my mind was still running a million miles a second. while under the influence of this drug i knew i needed to escape but it was like my body would just ignore this instinct. sort of like how you want to move when you realize you have sleep paralysis but your body does not respond. over time the drug would wear off and i would then run trying to find an escape route but more people in coats would hold me down and inject me with larger doses, my mind would get more and more frantic as it wore off but the larger the dose the more i would forget what it was i intended to do , which was escape. eventually i managed to pull myself together enough and found an exit but the door was locked and people in labcoats cornered me and began to stab me furiously with syringes all over my body and then i woke up... shit like that i cant forget.
my manner of dealing with it was not sleeping at all... there were many cases i would rather not sleep than run the risk of getting a bad draw and ending up having another night terror... eventually sleep deprivation took hold and i began to forcibly fall asleep but by that point i either stopped having dreams or i was not "remembering" them upon waking because most of my dreams felt like "blanks" after that point. since then ive been having more normal dreams but during autumn / winter they crop up sometimes if my mood drops.
im still not sure how to deal with them though i know sleep deprivation is not the answer ( at least not a healthy one ) and im fairly dubious of medication so ive never been to a doc about it.... ive just kinda toughed it out when they come back. i find that keeping my state of mind stable helps a lot though.... which as a mechanism i tend to make jokes and laugh a lot and hardly take anything seriously. i find the happier i keep my state of mind the less likely i am to fall into those when i do sleep.