The socialite wrote in The Times: "My living hell at boarding school involved verbal, emotional and psychological abuse. I developed nightmares and PTSD.
"It affects my relationships to this day. There’s a whole industry catering to troubled teens, but at these schools there’s often inhumane treatment and they need to be held accountable.
"I want these kids to be believed and feel validated, so no child has to go through what I did."
The star said she often feels "really lonely" due to the "transient" nature of her lifestyle.
She wrote: "Living such a transient life, always on the road, means it’s hard to settle down."
However, in February this year, Hilton got engaged to her boyfriend Carter Reum, a venture capitalist, on her 40th birthday.
She wrote: "It’s no secret that I’ve had a colourful dating history. But Carter respects me and loves me for me, without wanting anything. I’ve never had that before."
Earlier this year, Hilton spoke about the couple’s future plans during an episode of her podcast This Is Paris, revealing that they hope to have children together.
"It’s something that I’ve really been looking forward to and we’ve talked about a lot ever since we’ve been together, just having a family is going to be so exciting and how cute they’re going to be, and how fun it’s going to be," she said.
"First the wedding, then the babies."
The 40-year-old also said that she plans to take Reum’s surname: "I’m going to take it, but I feel like a hyphenated thing like Paris Hilton-Reum, because my name is just my name. I like it."
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