The creation of a specific diagnosis for children reflects the lesser ability of children to have insight into what they are experiencing, or ability to express it if they have insight. Other specified gender dysphoria or unspecified gender dysphoria can be diagnosed if a person does not meet the criteria for gender dysphoria but still has clinically significant distress or impairment. Intersex people are now included in the diagnosis of GD.The International Classification of Diseases (ICD-10) lists several disorders related to gender identity:
Transsexualism (F64.0): Desire to live and be accepted as a member of the opposite sex, usually accompanied by a desire for surgery and hormonal treatment
Gender identity disorder of childhood (F64.2): Persistent and intense distress about ones assigned gender, manifested prior to puberty
Other gender identity disorders (F64.8)
Gender identity disorder, unspecified (F64.9)
Sexual maturation disorder (F66.0): Uncertainty about ones gender identity or sexual orientation, causing anxiety or distressThe ICD-11, which came into effect on 1 January 2022, significantly revised classification of gender identity-related conditions. Under "conditions related to sexual health", the ICD-11 lists "gender incongruence", which is coded into three conditions:
Gender incongruence of adolescence or adulthood (HA60): replaces F64.0
Gender incongruence of childhood (HA61): replaces F64.2
Gender incongruence, unspecified (HA6Z): replaces F64.9In addition, sexual maturation disorder has been removed, along with dual-role transvestism. ICD-11 defines gender incongruence as "a marked and persistent incongruence between an individuals experienced gender and the assigned sex", with no requirement for significant distress or impairment.
Comorbidities
Among youth, around 20% to 30% of individuals attending gender clinics meet the DSM criteria for an anxiety disorder. Gender dysphoria is also associated with an increased risk of eating disorders in transgender youth.A widely held view among clinicians is that there is an over-representation of neurodevelopmental conditions amongst individuals with GD, although this view has been questioned due to the low quality of evidence. Studies on children and adolescents with gender dysphoria have found a high prevalence of autism spectrum disorder (ASD) traits or a confirmed diagnosis of ASD. Adults with gender dysphoria attending specialist gender clinics have also been shown to have high rates of ASD traits or an autism diagnosis as well. It has been estimated that children with ASD were over four times as likely to be diagnosed with GD, with ASD being reported from 6% to over 20% of teens referring to gender identity services. Epidemiology
Different studies have arrived at different conclusions about the prevalence of gender dysphoria. The DSM-5 estimates that about 0.005% to 0.014% of people assigned male at birth and 0.002% to 0.003% of people assigned female at birth are diagnosable with gender dysphoria.According to Blacks Medical Dictionary, gender dysphoria "occurs in one in 30,000 male births and one in 100,000 female births." Studies in European countries in the early 2000s found that about 1 in 12,000 natal male adults and 1 in 30,000 natal female adults seek out sex reassignment surgery.