His mother, who was a nurse, also claimed that he had been given heavy doses of drugs to sedate him.
"It sounds unbelievable. But it's the nightmare we've been living. The last 11 days we've had little sleep," Mrs Pascoe wrote on the petition.
In November, James was moved to a supported accommodation centre in Whittlesea where he lashed out causing staff to ring the police who took him to hospital on the 21. Later the same day he panicked again and was hospitalised.
Writing on the petition Mrs Pascoe added: "It's heart breaking to think just 2 years ago he was happily walking around SeaWorld with his grandmother and Aunty.
"Now thanks to mistreatment he's anxious and lashes out in fear and anxiety and lack of coping due to his unresolved grief and loss."
James' behavioural therapist Jeanette Coombes told the Herald Sun: "In my professional perspective the longer he is in this environment the higher his trauma response will be".
"He is doing what he can to communicate his distress. He is scared and (anxious) and wants to be around people he knows - he just wants out," she said.
Mrs Pascoe's mother used to care for James - calming him down and providing a stabilising influence - but after her death from pancreatic cancer in 2012 James behaviour changed.
"He withdrew and became depressed and became obsessed with the fact that people died," Mrs Pascoe told Daily Mail Australia.
A spokesperson for the Department of Human Service told the Daily Mail Australia: "James was admitted to the Northern Hospital by his family. His family and a consulting physician are making decisions about his care while in hospital."
"While several options for support have been offered for James' long term care, these options have not so far been accepted by his family."
The statement continued: "The department will continue to work with James and his family to make sure he gets appropriate and quality care."
• You can sign the petition here
- Independent