[Transsexualism: from diagnosis to management].

The transsexualism or gender dysphoria is a pathology during which an individual does not recognize himself in his sexual identity and wishes to change it: in that it must be differentiated from the sexual ambiguities (hermaphrodism, pseudohermaphroditism) in which the sexual phenotype is not clearly established. In France the number of transsexuals is estimated at approximately 50,000 people. Since 2009 the transsexualism is not any more considered as a mental illness, it remains regarded as a long term illness. The objective of this article is to present the recent evolutions concerning the management of transsexual patients seeking feminization.