The feeling was absolutely real. The feeling is best described as feeling cornered and attacked, with my only way out being extreme violence.

That said, I've also been tested for all kinds of problems (yay affordable health care + endless supplies of mental care), and I'm completely normal and not dangerous. I just have misophonia.

They did studies on misophonia and I was part of it during another unrelated rehabilitation (accident related) for which I was treated in the same hospital.

Interestingly, it's not a mental problem, it's physical, see: https://www.nature.com/articles/s41598-019-44084-8