Multiple personality disorder manifesting itself under the mask of transsexualism

The case of a young female patient is described who presented symptoms of transsexualism; surgical intervention was considered. Admitted to the hospital after having become depressed and suicidal, a thorough examination and observation revealed the presence of multiple personality disorder (MPD). Even though transsexualism and MPD represent two different conditions, there are many similarities between them. The possibility of MPD should be considered in every case of transsexualism.