Dekaron

Terrifying. Disturbing. Erie. These words describe the nightmares I've been having over the last month or so. Some times I see it when I'm awake.
These... images keep tearing at my sanity. It's like a sickness, the longer I have it, the worse it gets. I see shapes, patterns, like some kind of language clouding my vision like thick fog. On the other side of the static-y shapes are flashes of images, like a memory fragment, though, it's past the point of terrifying.
Monsters, no, demons. Demons that possess the bodies of the dead and transform and consume the living.
My movement is paralyzed. I try to run, but don't have to because all the demons do is surround me as to keep me from running.
The next thing I know, I see a good friend of mine approach me. This doesn't sound bad, but they died about five years ago. But they look like they didn't stop aging.
She killed herself via wrist slice, but she's got dried blood around her mouth and down her cheeks like she cried blood.
She grabs my throat and an iron grip begins choking me. As her grip begins to tighten I see this pillar thing that's in kind of a spiral formation that speaks to me from the souls of thousands of deceased.
By now I awake, sweating profusely and panting heavily. The rest of the night is one spent without sleep.
When I say I see the nightmare while I'm awake I see her and the pattern things. When I see them I get an enormous migraine in every inch of head. I'm seriously going to seek therapy if this continues to get worse.