I apologize for my generation in pushing this.
Clearly, to any rational person, believing oneself to be a different sex is a mental disorder.
“Clearly, to any rational person, believing oneself to be a different sex is a mental disorder.”
How do you figure when there have always been intersexed humans?
You do realize all males begin fetal development as females until and unless there is an XY chromosome and the XY chromosome is fully successful in completing the male development without an abnormality. Any physical impairment of full male development of the initial female fetus results in physical and/or mental female characteristics being present in an otherwise chromosomal male.