THE COREYS: Child stars Haim, left and Feldman, right, in a still from classic film The Lost Boys.

A famous 1980s child star has published a tell-all book about the sexual abuse he suffered at the hands of older men in Hollywood, warning parents of the underground horrors of the child actor industry.

Corey Feldman appeared in movies Stand By Me, The Lost Boys, Gremlins and The Goonies.

He recalls in his new book, Coreyography, how he and fellow child star Corey Haim were told by adults they trusted in the industry that it was normal for older men and young boys to have sexual relations.

Getty Images LATER IN LIFE: The two Coreys in 2010, the year Haim (right) died.

Feldman first met Haim on the set of The Lost Boys when they were just 14: they soon realised they were both being abused by Hollywood power players.

Feldman reports that Haim told him he had been sodomised when "innocent and ambitious" and just 14 by an older male on the set of the 1986 film, Lucas.

This man who abused Haim now "walks around, one of the most successful people in the entertainment industry, still making money hand over fist," Feldman writes in the book.

Feldman said he sought out adult role models at work due to a dysfunctional home life, with his mother dying his hair blonde at age four and torturing him about his weight, the Daily Mail reported. He was his family's breadwinner at age seven.

These 'role models' took advantage of their power: Feldman says he was abused by an assistant hired by his father when he was in his early teens. He says the man, who was in his early 20s, took him out on the town and gave him a cocktail of pills.

He writes that the man he refers to as "Ron" put a hand on his thigh and ended up having oral sex with the "petrified" and "revolted" Feldman that night.

The relationship with Ron lasted several years, but Feldman also formed relationships with other men during this time, many of whom turned out to be paedophiles.

In one especially sad moment in the book, which is being released on October 28, Feldman reflects on a picture taken at his 15th birthday of him and Haim with five older men - he says all five men were paedophiles, and all of them had abused them.

"Slowly, over a period of many years I would begin to realise that many of the people I had surrounded myself with were monsters," he writes of his early career in Coreyography.

The two child actors went on to make nine films together, they also partied heavily, their increasingly damaging antics driven by the horrors of their abuse.

Feldman developed a dependence on drugs after discovering his mother's cocaine stash, and snorted 3.5 grams every two days, before later moving onto heroin.

Haim's dependency was even worse - relapsing several times before dying of pneumonia in 2010 aged just 38.

Feldman relapsed in 1995, but he said since then he's been clean. He now works on low-budget horror films and, with ex-wife Playboy model Susie Sprague, has a 9-year-old son - who he will not be encouraging into child acting.

"People always ask me about life after childhood stardom. What would I say to parents of children in the industry?' he writes.

"My only advice, honestly, is to get these kids out of Hollywood and let them lead normal lives."

Feldman says Michael Jackson was one of the few people who treated him with respect. As a teenager desperate for normalcy, Feldman called Jackson, who he had been introduced to by Steven Spielberg.

"I was shattered, disgusted, devastated. I needed some normalcy in my life. So, I called Michael Jackson," he recalls.

"Michael Jackson's world, crazy as it sounds, had become my happy place. Being with Michael brought me back to my innocence. When I was with Michael, it was like being 10 years old again."

He insists in the book that Jackson never abused him or tried to touch him sexually.