1) >"We have lifted the lid culturally," said developmental psychologist Diane Ehrensaft, whose Oakland practice has seen a fourfold increase in the number of gender-questioning kids in recent years. "These kids have always existed, but they kept it underground." Her colleague, Steve Rosenthal, started the UCSF Child and Adolescent Gender Center three years ago and now serves 200 families, including Bishop's, and has opened a satellite branch in San Mateo. The gender center took on 13 new families in May, the clinic's busiest month yet.

http://www.mercurynews.com/science/ci_28261019/transgender-kids-exploding-number-children-parents-seek-clinical

Note that Johanna Olson, MD is the medical director of the Center for Transyouth Health and Development at CHLA. She is a prolific author of journal articles on the subject of trans kids.

2) >Since April 2011, the clinic has accepted over 100 new youth seeking information or medical intervention to assist in their transition process to bring their physical bodies into closer alignment with their internal gender identity. Due to the rapid expansion of the clinic and the need for a separate identity, the Center for Transyouth Health and Development was formally named in August of 2012.

http://www.chla.org/the-center-transyouth-health-and-development#.VTrmwa1Viko

3) > Experts say increasing numbers of little kids are showing up in doctors offices insisting they were born into the body of the wrong sex.... "We're seeing it all across the state," said Dr. Daniel Reirden, a Children's Hospital Colorado physician who said his referrals "went up 200-fold" after he spoke on the issue of children and gender-identity disorder at a recent conference.

http://www.denverpost.com/ci_22706559/pediatricians-see-growing-number-crosss-gender-kids-like

4) While my primary interest is what's going on in the U.S., here's a relevant quote from the UK newspapers:

The number of children aged 10 or under who have been referred to the NHS because of transgender feelings has more than quadrupled in five years, according to new figures.

http://www.telegraph.co.uk/news/health/news/11519603/Rise-in-child-transgender-referrals.html