Dr. Anne Georgulas, who is the mother of James Younger, originally won her previous court case last October that allow her to give him hormones that block puberty.

But the decision by the jury meant the boy's father, Jeff Younger, who opposed such a procedure, had absolutely no say in his son's medical decisions. 

Now that ruling has been overturned after Dallas Judge Mary Brown ruled on Thursday that both parents should have joint conservatorship over their child which would mean all decisions would have to be agreed upon by both parents. 

 Georgulas's attorney has since promised to challenge the judge's ruling. 

Thursday's ruling means Georgulas and Younger will have to make joint medical decisions regarding their child, which includes whether James should undergo hormone replacement therapy to transition to a girl.

They will also have to jointly agree on haircuts for the child, as well as dental and psychiatric care.