[Constructing a multicenter collaboration system].

Providing medical care for Gender Identity Disorder (GID) poses enormous challenges and difficulties. The one obstacle to overcome is building a pluralistic treatment system in collaboration with experts from various fields of medicine as outlined in "Guidelines for Treatment and Diagnosis of GID version 3rd" established by the Japanese Society of Psychiatry and Neurology. Another obstacle includes the multilayered decision tree in deployment of physical as well as psychiatric treatment. Offering continuous supports of the pluralistic treatment system following the multilayered decision tree poses a major obstacle. In this report, we examined these obstacles from a perspective of the actually accessible healthcare resources and came up with a proposal of constructing a multicenter collaboration system. As one of concrete example of a solution to these obstacles, we demonstrated our activity of "Kansai GID network." By sustaining these activities, many obstacles posed in the treatment of GID could be overcome. We hope substantial and comprehensive treatment systems for GID shall be promptly established in Japan.

Biological aspects of gender disorders.

The scientific community is very interested in the biological aspects of gender disorders and sexual orientation. There are different levels to define an individual's sex: chromosomal, gonadic, and phenotypic sex. Concerning the psychological sex, men and women are different by virtue of their own gender identity, which means they recognize themselves as belonging to a determinate sex. They are different also as a result of their own role identity, a set of behaviors, tendencies, and cognitive and emotional attitudes, commonly defined as "male" and "female". Transsexuality is a disorder characterized by the development of a gender identity opposed to phenotypic sex, whereas homosexuality is not a disturbance of gender identity but only of sexual attraction, expressing sexual orientation towards people of the same sex. We started from a critical review of literature on genetic and hormonal mechanisms involved in sexual differentiation. We re-examined the neuro-anatomic and functional differences between men and women, with special reference to their role in psychosexual differentiation and to their possible implication in the genesis of homosexuality and identity gender disorders. Homosexuality and transsexuality are conditions without a well defined etiology. Although the influence of educational and environmental factors in humans is undeniable, it seems that organic neurohormonal prenatal and postnatal factors might contribute in a determinant way in the development of these two conditions. This "organicistic neurohormal theory" might find support in the study of particular situations in which the human fetus is exposed to an abnormal hormonal environment in utero.

Assessing and addressing inappropriate sexual behavior in brain-injured clients.

Inappropriate sexual comments and behaviors from clients with brain injuries can be frustrating, awkward, and time consuming for the nurses who are caring for them. Understanding the meaning of these comments and behaviors, as well as receiving direction concerning ways to handle the situation can help nurses overcome their frustration and improve the quality of nursing care. This article examines potential underlying causes of inappropriate sexual behavior, explains the behaviors from client, family, staff, and organizational perspectives, and begins to look at ways to respectfully and sensitively address the behaviors using a model and framework developed by the Sexual Health Service (SHS) at Vancouver Hospital and Health Sciences Centre (VHHSC), in British Columbia, Canada.

Older women's sexuality.

In consultations with older women, doctors should ask about sexual problems. A holistic approach is needed to examine the many different factors that can affect sexuality. Hormonal changes associated with ageing have an impact on women's sexuality. Doctors need to have a clear idea of the place of hormonal treatment for different sexual problems. Physical changes associated with ageing, including illness and disability, may interfere with sexual expression. Diseases of the endocrine, vascular and nervous systems will most commonly affect sexual function. A broad range of psychosocial factors associated with ageing may influence sexuality.

Changes in anthropometry with testosterone therapy in a female with gender identity disorder.

A 31-year-old regularly menstruating Japanese female was referred to our outpatient clinic by a psychiatrist. She had been diagnosed as having gender identity disorder by detailed counseling and clinical intervention 3 years earlier. After obtaining fully informed written consent, we treated her with 125 mg of testosterone enanthate, intramuscularly, every 2 weeks for 4 months. Serum testosterone levels increased to the normal male value (from 28 to 432 ng/dL). Although menstrual cycle remained regular, her voice became lower after 4 months of therapy. Body weight, body mass index, and lean body mass increased, while body fat mass and percentage of body fat decreased. However, trunk-leg fat ratio did not change during the observation period. During testosterone therapy, a disproportionate increase in lean body mass and decrease in body fat mass are early onset events, while the shift toward upper body fat distribution may be a late onset event along with increase in BMD.