Not a mental health worker but a camp counselor at a camp for under-privileged kids. We had a camper who had blind rage, he would be completely normal then randomly would fucking snap. The very last day of camp, he was just waiting in line for something when someone threw a rock and it hit the kid who had blind rage directly in the eye causing him to bleed from his eye. I have never heard a worst scream in my entire life. He then starts running towards the kid who hit him in the eye. It fucking took 4 staff to get this 10 year old to not fucking kill another kid.

EDIT: We drove him to the hospital instantly, we were deep in the woods, an ambulance would have taken too long. He didn't lose his eye and is fine.