Identity disorder in the DSM was first listed as a separate diagnosis in version III (1980).
[1] In the DSM-IV (1994), it was replaced by "Identity problem", which was not defined as a mental disorder per se, but was listed in the chapter "Other Conditions That May Be a Focus of Clinical Attention".
In practice, if a person's distress persisted or worsened, an Identity problem would often be succeeded by a diagnosis of an actual disorder, such as a mood disorder or borderline personality disorder.
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