Transsexualism suffers from several definitions that evolve across time. Therefore, some discrepancies appear progressively in regard of evidence-based medicine and psychological approaches as sexo-analysis.

In our present study, we test if “primary” or “secondary” transsexualism defines in accordance with sexo-analysis definitions will be reliable with the pathology course.

Clarify the definition of transsexualism to obtain a better understanding of this trouble and perhaps to change psychological approaches of gender disorders.

Nine transsexual male-to-female (MtF) aged between 25 to 65 were voluntary recruited. They were diagnosed by a psychiatrist. We adapted the GID scale to measure the lifetime process. Descriptive statistics were reported. Results are expressed as mean ± standard deviation.

Age of the group is 41 ± 12. All subjects were treated by hormone therapy. One of them was surgical reassigned. All subjects reported a persistent feeling to be a woman across their entire life. None showed a decreased female feeling during a part of their life or a brutal apparition of this trouble during the adult period.

In regards of our preliminary results, we concluded that secondary transsexualism should be redefined and was probably induced by sociocultural aspects. Our results are limited by amount of subjects and should be confirmed by a large population included MtF and FtM people.

The authors have not supplied their declaration of competing interest.