Given recent events, I thought it would be interesting to trawl the Wayback Machine and see how the organisation has developed over time with regards to diagnosing children as transgender.
What is Gender Dysphoria?
2009
Gender Identity Disorders in infancy, childhood and adolescence are complex and have varied causes: in the majority of cases the eventual outcome will be homosexuality or bisexuality, but often there will be a heterosexual outcome as some gender issues can be caused by a bereavement, a dysfunctional family life, or (rarely) by abuse. Only a small proportion of cases will result in a transsexual outcome
<a class="break-all" href="https://web.archive.org/web/20090307015630/www.mermaidsuk.org.uk/gidca.html" rel="nofollow" target="_blank">web.archive.org/web/20090307015630/www.mermaidsuk.org.uk/gidca.html
2010
Gender dyphoria, also known as Gender Identity Disorder, applies to someone who is unhappy with their biological sex and who wishes to belong to the other one.
Gender Identity is the sense of belief that "I am male" or "I am female". A child becomes aware of its gender identity before or around the age of five years, in many cases as early as 2 or 3 years of age. In most people their gender identity is the same as their sex, i.e. a woman or girl feels she is female and a man or boy feels he is male, but in a few people their gender identity and their sex do not match, and this can cause problems.
Gender Identity Issues vary considerably, some may be transient in nature, and some may not. They may arise when a child exhibits cross-gender behaviour to some degree or other. Some may be boys who prefer to take the female role or vice versa; others may have a compulsion to play with toys mostly used by the other sex (for instance, a boy who predominantly plays with dolls or a girl who always plays with action men and 'army toys'). Some children may only feel comfortable when playing with peers of the other physical sex, or may cross-dress from time to time.
Some children may be unhappy about their own biological sex and either wish to belong to the other one, or feel that they actually do; some adolescents may experience a crisis over a problem of gender identity or sexual orientation, or both. These situations can lead to considerable concern and distress for all those involved.
<a class="break-all" href="https://web.archive.org/web/20100718215911/www.mermaidsuk.org.uk/New%20Mermaids/whatisgid.htm" rel="nofollow" target="_blank">web.archive.org/web/20100718215911/www.mermaidsuk.org.uk/New%20Mermaids/whatisgid.htm
2012
For example, your daughter may say that she wants to be a boy, or your son may identify himself as a girl. Or perhaps you are worried about your child's cross gender behaviour, but they won't discuss it with you, and instead are isolated and withdrawn.
Or it may be you, as a young person, and you feel that your body is wrong, and that you should have been a girl if you were born a boy, or a boy if you were born a girl.
(Added to 2010 description)
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They seem to have removed their page about gender dysphoria sometime after 2016. However, we can glean some information about how to diagnose children from their parent testimonials
2019
"Kelly"
“From the age of two we started to notice that Evie didn’t quite fit in. I thought that my son was going to be gay, but it became apparent that there was something more than that.
“Evie always wanted to play with dolls, and never had any interest in traditional boys toys, like cars or dinosaurs. We had an older son and the two could not have been more different.
“Evie loved bracelets and constantly wanted to wear one, and when I bought the children Guess Who? to play she unclipped all the female faces and put them in a handbag to carry around with her.
“Evie would look longingly at other little girls who were wearing dresses or skirts, and every time I picked her up from the childminder she would be have raided the dressing up box for a princess costume. She would come to the door to meet me in a sparkly pink dress and a tiara with a big smile on her face.
“At other children’s houses she would love putting on the princess outfits, and would have a meltdown when she had to take them off as it was time to leave.
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"Denise"
“We didn’t notice Sally having any particular problems or issues as she was growing up, but her primary school was very small and the classes were mixed together in infants, so there was no real distinction between boys and girls or age groups.
“But looking back I can see there were pointers. Sally always wanted to play with the dressing up box, and she always wanted to be a princess. She always wanted long hair too.
<a class="break-all" href="https://web.archive.org/web/20190301090129/www.mermaidsuk.org.uk/parents-voices.html" rel="nofollow" target="_blank">web.archive.org/web/20190301090129/www.mermaidsuk.org.uk/parents-voices.html