DefinitionGender identity disorder is a conflict between a person's actual physical gender and the gender that person identifies himself or herself as. For example, a person identified as a boy may actually feel and act like a girl. The person experiences significant discomfort with the biological sex they were born.See also: IntersexAlternative NamesTranssexualismCauses, incidence, and risk factorsPeople with gender identity disorder may act and present themselves as members of the opposite sex. The disorder may affect:Choice of sexual partnersDisplay of feminine or masculine mannerisms, behavior, and dressSelf-conceptGender identity disorder is not the same as homosexuality.Identity conflicts can occur in many situations and appear in different ways. For example, some people with normal