Prominent transgender advocate Catherine McGregor told the newspaper that children at that age were often right about their need to transition, but advised caution "on making any irreversible decisions at that stage".
Up to 250 children as young as three are reportedly being treated by the gender dysphoria unit at Melbourne’s Royal Children’s Hospital.
Child psychologist Michael Car-Gregg estimates that around 2.7 percent of children could fit into this category and says these children are at extra risk of bullying and they need to be managed with “compassion and sympathy”.
"It is the feeling of being born in the wrong body," he told The Daily Telegraph.
"There is a huge difference between dress-ups and a child believing with every fibre of their being they are in the wrong body."