I suffer from PTSD. Sometimes I've wondered if this would help with some of my nightmares. It might, but I doubt it would help with the PTSD night fears though, such as sleeping in a home alone at night without a knife under my pillow, a phone in my hand, both eyes open, all the lights on and constantly getting up to check the doors and windows every 20-30 minutes. I doubt wiping my memories would do much unless it would go back 30 years without turning me into a vegetable, that is. Interesting idea regardless. I think some people are prone to nightmares regardless because my daughter gets them very frequently and she has no trauma in her life thus far.