Mental health professionals of reddit, what is the saddest case of "wow this person really fucked up because of how they were treated during their childhood" you have ever come across?

I’m a therapist and almost my entire professional background has been working with kids and adolescents, many from the foster care system. I’ve read and seen some fucked up shit.

I have one right now that is really bothering me though. Pre-teen girl alleged abuse, borderline torture, a year ago and almost immediately began displaying psychotic symptoms and extreme rage and aggression. She bites chunks out of her skin and used a floss pick to dig out one of her fucking teeth. She acts, quite literally, like a caged animal because she was treated like one. Turns out she’s suffering from possible dissociative identify disorder (multiple personalities).

/r/AskReddit Thread