LAUSR

The present research used linked surveillance systems (British Paediatric Surveillance Unit; and the Child and Adolescent Psychiatry Surveillance System) over a 19 month period (1 November 2011–31 May 2013) to notify of young people (4–15.9 years) presenting to secondary care (paediatrics or child and adolescent mental health services) or specialist gender services with features of gender dysphoria (GD). A questionnaire about socio-demographic, mental health, and GD features was completed. Presence of GD was then assessed by experts in the field using then-current criteria (DSM-IV-TR). Incidence across the British Isles was 0.41–12.23 per 100,000. 230 confirmed cases of GD were noted; the majority were white (94%), aged ≥12 years (75.3%), and were assigned female at birth (57.8%). Assigned males presented most commonly in pre-adolescence (63.2%), and assigned females in adolescence (64.7%). Median age-of-onset of experiencing GD was 9.5 years (IQR 5-12); the majority reported long-standing features (2–5 years in 36.1%, ≥5 years in 26.5%). Only 82.5% attended mainstream school. Bullying was reported in 47.4%, previous self-harm in 35.2%, neurodiversity in 16%, and 51.5% had ≥1 mental health condition. These findings suggest GD is rare within this age group but that monitoring wellbeing and ensuring support for co-occurring difficulties is vital.