The experience of this dissonance between the sex appearance and the sense of being male or female is termed gender dysphoria. The diagnosis should not be taken as an indication of mental illness.
Appendix A Legal Rights of Transgendered People Section A.1
It should be noted that a Court of Appeal in Madrid ( Katia vs IMSALUD 2003) found that, as an Intersex condition, transsexualism should be treated on an equal basis as other "corrective" intersex surgery.
We're getting there.