Transsexualism

1. The individual desires to live and be accepted as a member of the opposite sex, usually accompanied by the wish to make his or her body as congruent as possible with the preferred sex through surgery and hormonal treatment.
2. The transsexual identity has been present persistently for at least 2 years.
3. The disorder is not a symptom of another mental disorder, such as schizophrenia, nor is it associated with chromosome abnormality.

Dual-role transvestism

1. The individual wears clothes of the opposite sex in order to experience temporarily membership of the opposite sex.
2. There is no sexual motivation for the cross-dressing.
3. The individual has no desire for a permanent change to the opposite sex.

Gender identity disorder of childhood
For girls:

1. The individual shows persistent and intense distress about being a girl, and has a stated desire to be a boy (not merely a desire for any perceived cultural advantages to being a boy), or insists that she is a boy.
2. Either of the following must be present:
   1. persistent marked aversion to normative feminine clothing and insistence on wearing stereotypical masculine clothing, e.g., boy's underwear and other accessories;
   2. persistent repudiation of female anatomical structures, as evidenced by at least one of the following:
      1. an assertion that she has, or will grow, a penis;
      2. rejection of urinating in a sitting position;
      3. assertion that she does not want to grow breasts or menstruate.
   3. The girl has not yet reached puberty.
   4. The disorder must have been present for at least 6 months.

For boys:

1. The individual shows persistent and intense distress about being a boy, and has an intense desire to be a girl or, more rarely, insists that he is a girl.
2. Either of the following must be present:
   1. preoccupation with stereotypical female activities, as shown by a preference for either cross-dressing or simulating female attire, or by an intense desire to participate in the games and pastimes of girls and rejection of stereotypical male toys, games, and activities;
   2. persistent repudiation of male anatomical structures, as indicated by at least one of the following repeated assertions:
      1. that he will grow up to become a woman (not merely in role);
      2. that his penis or testes are disgusting or will disappear;
      3. that it would be better not to have a penis or testes;
3. The boy has not yet reached puberty.
4. The disorder must have been present for at least 6 months.

Other gender identity disorders
Gender identity disorder, unspecified