I absolutely cannot believe that there are other people out there experiencing what I can only describe as the scariest phenomenon that has ever occurred in my life. I am currently 18, the first time I remember experiencing this was probably about 5 years ago. These episodes are not every night, and when they occur they might occur in episodes of about 6 or 7 times in a period of 2 weeks then not return for a few months. I'm not entirely certain of the pattern, but they have become often enough over the years that I consider it noteworthy.
I agree with the majority of you that the feeling is best described as overwhelming dread. I too tend to experience a ringing or whistling in my ears, a sort of head pounding or even what I would like to call "brain locking"...I can almost feel my brain doing some weird thing where it sort of locks and is very intense. My whole body is of course paralyzed, and I am not asleep yet, this is right as I am attempting to fall asleep.
The first few times this happened I chalked it up to thinking too much before bedtime, I tend to have racing thoughts before this happens. I don't know if that has anything to do with it. But more recently these episodes have become what I can only describe as terrifying. It is exactly how others have said, you feel as though you have two choices. Either you can continue trying to sleep and being completely taken over by this death like feeling, or you can jar yourself awake. I always jar myself awake as soon as possible, and the one or two times I have tried to "ride the wave" I feel like I KNOW something bad is pending and I don't want to find out what it is.
I definitely feel a sense of death involved...but I've recently been pondering a new theory. I myself have had issues with alcoholism and blackouts and know that there are some things I've done that I may be pushing to the back of my mind. Is it possible that these episodes are repressed memories pushing through? Is it possible that we are trying to awaken ourselves because we don't want to uncover them? Is it possible that associated with these episodes are feelings of guilt? I'm not quite sure.
That is just an idea because I do feel more inclined that this problem has more to do with death. I feel as if I continue letting the feeling take over that I may die.
It is quite comforting that other people experience this, I'm not gonna lie, for a time I thought I was crazy.