F60-F69: Disorders of adult personality and behaviour
F64: Gender identity disorders
Gender identity disorders, indicated by the ICD-10 code F64, are a group of conditions where an individual has a strong, consistent feeling of identification with the opposite gender and discomfort with their own assigned sex. This misalignment may lead to significant distress and problems in functioning in social, occupational, or other important areas of life. Common symptoms may include a strong desire to be of the other gender, a wish to be treated as the other gender, or a deeply felt incongruity with one's sexed body or assigned sex role. The onset and course of these disorders vary greatly, and they can develop and be recognized at any age. While the exact cause of these conditions is currently unknown, it is believed to be a complex interplay of genetic, hormonal, and environmental influences. The main system affected by these conditions is psychological, but they can also have profound secondary effects on physical health, relationships, and well-being.
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