Incest Survivors Support Group
Incest refers to any sexual activity between closely related persons that is illegal or socially taboo. Consensual adult incest is very rare. Incest between adults and prepubescent or adolescent children is a form of child sexual abuse that has been shown to be one of the most extreme forms of childhood trauma. If you or a loved one is a survivor of incest, join the group...

That's what I call it anyway.
I had one when I was 4 that I remember. I woke up from a nightmare. I opened my eyes. There was a bunch of huge shadow shapes in my room with red eyes and I started screaming in terror.
When I was in my 20's, I dreamed my dad was attacking me.
I woke up hitting the cat, who was sleeping on my chest
PTSD is unfortunately a huge add on contributor to how everything plays out.