By Jack Turban, April 8, 2017 in the New York Times
https://nyti.ms/2nWjzKuThis article offers a fairly detailed account of the recent changes in how doctors deal with transgender children and youth. It is encouraging. According to the author (a doctor), most doctors now support a child's "true gender".
Quoting:
In 2012, Dr. Diane Ehrensaft from the University of California, San Francisco, proposed "true gender self child therapy," in which even the youngest children are allowed to explore their gender identity, with all outcomes (transgender or not) being treated as equally desirable.
...
At this point, data on the benefits of early social transition is scarce. But this year researchers at the University of Washington published a study based on 63 transgender youth who were allowed to socially transition. They found that their levels of anxiety and depression were just about indistinguishable from their non-transgender peers.
...
When I met with Hannah and her parents to thank them for letting me write about them, we went through old photos of Hannah, including a few from when she was Jonah. I will never forget Hannah's giant smile in every picture of her living as her true self. Doctors once argued that it would be insane to block a child's puberty and change her body. Seeing Hannah as a happy and thriving teenager, I now see it would be insane not to.