Conclusions
Abnormal illness behaviours driven by the reinforcing contingencies of gender-affirming care may explain, in part, the increasing number and changing demographics of gender dysphoria, as well as the increasing incidence of desistance and detransition. The under-diagnosis and under-treatment of mental health disorders by clinicians treating these patients are examples of abnormal treatment behaviours. Uncritical affirmation of patient reported gender identity appears likely to conceal unconscious motivations of some patients and clinicians, increasing the risks of harm to both.