So, the protagonist of the story I'm developing is not a normal human, she was basically a guinea pig for illegal genetic experiments when this whole CRISPR thing was still a novelty(AKA "now") and has quite a formidable physical and mental performance, but it's not so impressive anymore when the main story takes place (AKA "near future") because getting genetically enhanced has already become a widespread, common practice.
I got inspired by real-life cases of people with "superpowers" due to gene mutations and also some animals with useful capabilities.
One of these capabilities regeneration.
At one point of the story she gets kidnapped and violently beaten by a gang of vandals in an abandoned building, and because she is very tough she can withstand a serious beating. She was hit in the head with a metal pipe several times before collapsing, after which she was left for dead. She is rescued after a few hours by a couple of urban explorers.
After a few days she wakes up in a hospital; other than the psychological trauma that causes her to have post-traumatic stress and explosive rage attacks, I thought about some neurological problems that she could face because her brain got rewired differently when it regenerated.
Possibilities included Prosopagnosia (inability to remember/recognize faces) that makes her resort to other means of recognizing people (Voice, smell, body language, etc.) and also chronic headaches that require large doses of analgesics because she is resistant to drugs due to her fast metabolism, so she needs larger and larger doses until she is resorting to horse anesthetics.
Given the description above, does this clinical condition seem believable from a biological point of view?