Hi Hobbit!
I have never heard of dream disorder. Most people that have these vivid, scary dreams are PTSD and the dreams themselves are called night terrors. That kind of sounds like what you are dealing with right now, especially if you are waking yourself up shouting as the result of a dream.
I used to do that. Also woke up crying or feeling as if I were being smothered or so wrapped up in the bedclothes that I knew my dreams had been very aggitated. Sometimes I just had to get up because I was afraid if I went back to sleep I would fall right back into that horrible place.
Sometimes it has taken me an hour or two to really come out of the dream and stop shaking and freaking out.
The main reason I wanted to post this is because they are giving me a drug (I am BP, anxiety and PTSD-post tramatic stress disorder) that works very effectively for me and I rarely have nightmares any more.
It is called CYPROHEPTADINE. You might want to ask your doc about it.
Hope this helps-

T&S