Lisa Littman, an American physician and researcher, coined the term "rapid-onset gender dysphoria", then an adjunct assistant professor at the Icahn School of Medicine at Mount Sinai, became interested in the possible role of social contagion in gender dysphoria among young people after noticing that, in her small town in Rhode Island, a few teenagers in the same friend group began identifying as transgender.
See ‘Salem witch trials’. Same mass hysteria among young pubescent girls. In its milder form see hysteria over Elvis, the Beetles and Justin Bieber,