How does one know if one has unprocessed trauma?
Discussion
Generally when you notice in yourself an inclination to avoid. Avoidance to think of particular things, to spend time with yourself, to feel what feelings would naturally come up. (This imo is the root of all addictions) Nightmares can be another indication, as it is the subconscious at work.
I looked in to this about 26 years ago. From what I could tell, nightmares were simply a mechanical way for the brain to sweep garbage data out the back door as it filed info into longer term memory. Have there been more discoveries since that time?