Basic Terminological Differences

Harry Benjamin Syndrome (HBS) is an intersex condition that develops before birth involving the process of differentiation between male and female. HBS occurs when the brain develops in the manner of one sex and the rest of the body develops with the characteristics of the opposite sex. The sex indicated by the phenotype and the genotype opposes the morphologic sex of the brain.

Transsexuality is a phenomenon that occurs in the animal kingdom (e.g. certain amphibious, birds, marine species) that consists of a change of natural sex in the species. Popularly, we apply it also to humans when speaking of people who "change their sex". "Transsexuality" is a generic term that applies to all kinds of species and variations, while "Transsexualism" is a much more precise medical term, which we should use exclusively for people with the condition of Transsexualism (now, better defined as Harry Benjamin Syndrome).

Only a person can suffer transsexualism, modern Harry Benjamin Syndrome. Whilst animals can be transsexuals, they not suffer the human medical condition of Transsexualism.

Furthermore, the term "transsexuality" is commonly used today as a transgender political term under the flag of sexual diversity and sexual ambiguity, which is very degrading for people born with the true condition
of primary Transsexualism - Harry Benjamin Syndrome.

Transsexuality became a political constructed term that must not be linked to Harry Benjamin Syndrome due to the confusion that it creates.