Mine came back after being re-traumatized this year. I guess I just know the truth about my life. It's not a re-trauma so to speak it's more you can never escape, or be free from the past.
Anyway I've been waking up crying this week, and I think mine is from attempting medication when I know damn well it's not an unusual chemical imbalance that tortured me actual people were involved.
What I did in the past, and I have to do again is meditate as I fall asleep. And maybe to youtube positive dreaming stuff even.
Trying to go to bed like a normal person, and falling asleep leaves to much room for the past to come in dream time. I had nightmares and would wake up sobbing for over a decade until I did that. They were gone.
But this past year I had to question what happened to me again, and got an answer other than a "you were crazy and hallucinating." Anyway have to start the night time meditation I had a few years free of nightmares, but waking up powerless, unable to communicate, and sobbing like back then can hurt me all day if I can't shake it off..... Guided Meditation before sleep seems to be a key to my waking up.