There is an understanding within the ABI community, with the elders (if, ….) to that end, I say this in non-medical terms.
If someone has a life before they get their ABI/TBI, after this event and the fall out and dust settles, so to speak. They will retain that personality they had before the trauma. If someone was a player or a slut (I know, harsh words) or if they were funny, or love certain things. They will retain those traits after their ABI.
It is different when someone young, under-developed gets an ABI/TBI and even after an ABI/TBI etc, etc, the time often after the trauma improves. Five, ten, fifteen, twenty years, etc down the track.
I often wonder because I’ve had my AVM (my ABI) from before birth. How this has impacted my perceived personality. Because I think I’ve developed my personality and quirks around and despite my AVM.
ABI – Acquired Brain Injury
TBI – Traumatic Brain Injury
AVM – Arterial Venous Malformation