Reemergence of memories usually means that there was some form of trauma, abuse, neglect or emotional hurt that was experienced years ago, but was repressed because you were not in a safe or stable enough place to heal it.
Maybe you weren’t surrounded by others who would trust you, maybe you were too young, were still in a dangerous situation or had medical or personal stressors that didn’t allow looking inward.
The science behind why trauma “hides” and later “reappears”
Trauma healing isn’t a simple 1—2—3 step process. If you’ve experienced abuse, shock, loss, neglect, violation, assault, violence or witnessed any of the above, you may initially shut down the emotional memory because the intensity of the emotions are too much to “digest”. The human brain and body learn to put these into a “deep freeze” so it can get back to functioning in day-to-day life; showing up to school, work , perform duties and tend to relationships.
However, even when stored away, the body always remembers.
Even when memories are hidden, they don’t ever completely dissipate. Most trauma survivors experience triggers which are reminders to their unconscious mind of the past.
They may have nightmares that are metaphoric to the danger experienced, or may have flashbacks of images of what happened - often, without fully understanding what it’s all about. These are the ways the body holds onto the memory- no matter how much time passes, the body remembers all experiences.
Since it’s never fully “gone” from the system, eventually there will be a time where it comes spinning back in.
Why does this happen? Because you’re safe enough now. There’s a younger part of self that is inside that holds the experiences it’s gone through. When that part notices that you’re in a stable place in your life, or for the first time you’re in a place of safety, these memories come knocking - wanting to be heard, processed and resolved.