A 17-year-old transgender boy has become the first child in Australia to have been given the right to make decisions on special medical procedures without parental consent.

The Family Court found in December that the boy, known as Isaac, was competent and gave him the power to override his parent's wishes to prevent him from using puberty suppressants, testosterone replacement therapy and undergoing any surgery related to his gender.

A 17-year-old transgender person has won a case in Family Court to make his own medical decisions. Credit:Paul Jeffers

The case potentially paves the way for other children seeking treatment without the support of one or both of their parents to ask the courts to declare them competent enough to make the decision themselves.

Isaac - whose real name has been suppressed – was born a girl, but identified as a boy from a young age.