Some children as young as age 3 show early signs of gender dysphoria, or gender identity disorder, mental health experts who work with transgender children say.

CNN: STORY HIGHLIGHTS

While no prisoner has ever received court-ordered transgender surgery before, the U.S. Tax Court ruled in 2010 that treatment for gender identity disorder (GID) qualifies as a medical expense under the Tax Code, and is therefore deductible.

FORBES: Judge Orders Controversial Taxpayer Funded Transgender Surgery for Prisoner

While in prison, Robert Kosilek legally changed his name to Michelle Kosilek and instituted legal proceedings against Massachusetts to accommodate his treatment for gender-identity disorder.

FORBES: Judge Orders Controversial Taxpayer Funded Transgender Surgery for Prisoner