Transsexualism

Transsexualism
Classification and external resources
Specialty	psychiatry
ICD-10	F64.0
MedlinePlus	001527
MeSH	D014189
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Transsexual people experience a gender identity that is inconsistent with, or not culturally associated with, their assigned sex, and desire to permanently transition to the gender with which they identify, usually seeking medical assistance (including hormone replacement therapy and other sex reassignment therapies) to help them align their body with their identified sex or gender. Transsexual is generally considered a subset of transgender, but some people do not agree. A medical diagnosis of gender dysphoria can be made if a person expresses a desire to live and be accepted as a member of their identified sex, or if a person experiences impaired functioning or distress as a result of their gender identity.

Norman Haire reported that in 1921, Dora R of Germany began a surgical transition, under the care of Magnus Hirschfeld, which ended in 1930 with a successful genital reassignment surgery. In 1930, Hirschfeld supervised the second genital reassignment surgery to be reported in detail in a peer-reviewed journal, that of Lili Elbe of Denmark. In 1923, Hirschfeld introduced the (German) term "Transsexualismus", after which David Oliver Cauldwell introduced "transsexualism" and "transsexual" to English in 1949 and 1950.

Cauldwell appears to be the first to use the term to refer to those who desired a change of physiological sex. In 1969, Harry Benjamin claimed to have been the first to use the term "transsexual" in a public lecture, which he gave in December 1953. Benjamin went on to popularize the term in his 1966 book, The Transsexual Phenomenon, in which he described transsexual people on a scale (later called the "Benjamin scale") of three levels of intensity: "Transsexual (nonsurgical)", "Transsexual (moderate intensity)", and "Transsexual (high intensity)". In his book, Benjamin described "true" transsexualism as the following:

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