^Thanks.
Yeah, extreme nightmares provoking insomnia are not really normal.
Even though they're both linked to PTSD, I wouldn't say they're linked to each other.
It's not that I go to sleep at normal hours, but then I'm woken up by nightmares.
It's that I often don't feel tired and therefore don't go to sleep at normal hours.
Also, I more often wake up from a nightmare, than I'm woken up by a nightmare.
What usually wakes me up is my alarm clock or something like that.
The worst nightmares most people get are showing up to work naked, or getting lost in a building, or the random relative/pet is dead depressing one.
I guess most people have nightmares about events they're familiar with going wrong.
My nightmares are often about trying to fight unusually strong opponents, or trying to run away from unshakable pursuers, or being trapped in an inescapable room, and sometimes while having my hands tied together.
The car accident is also a pretty common one.
But I rarely have nightmares about firearms and never get shot in my nightmares, and as a matter of fact I rarely encountered firearms in my life and never was shot.
Fights in my nightmares are usually hand to hand or with cold weapons. Because that's what I had a lot of experiences with.
A nightmare I sometimes had when I was a kid, was about swimming in a large body of water and encountering some giant fish or sea monster. But I never drowned in a nightmare, and I never drowned or came close to drowning in real life.
That's why I'm guessing, when someone have no idea how something is like, they can't dream / have nightmares about it.