I still get nightmares, almost every night.
I used to twitch, shake and even cry in my sleep. Sometimes, when I'm woken up with nightmares and can't go back to sleep, I use my EMDR audio and headphones, lie in bed and do the eye movements (and inner sensations of bilateral swishing movements) and focus on the content of the dream. This sometimes leads me to source material in my waking life for the dream. Triggers. Repressed memories. Another piece or two of the puzzle.
Usually, sometime between the 4th through 7th track of audio (about 20-40 minutes) I fall asleep again. 5 hours of sleep is better than 2 or 3 right? On a good night, I'm now getting close to 7 hours. Makes a hell of a difference. I so much of PTSD are positive feedback loops (self-sustaining loops, nothing "positive" in the colloquial about it, right!? :rolleyes:). i.e. Lack of sleep makes a PTSD sufferer more symptomatic, more symptomatic means more frequent and intense nightmares, more nightmares further inhibits sleep, etc.
Bit of disclosure: I'm doing this without meds, for better or worse. I also have cut both alcohol and caffeine out entirely on my doctor's advice. I may never have either again. Not advising that anyone here cut themself off cold turkey from any meds they are on, just being clear about how I'm doing it and what tools I am and am not using as I work towards health.