Well here's what the NHS has to say on it:
What causes gender dysphoria?
Gender development is complex and there are many possible variations that cause a mismatch between a person’s biological sex and their gender identity, making the exact cause of gender dysphoria unclear.
Occasionally, the hormones that trigger the development of biological sex may not work properly on the brain, reproductive organs and genitals, causing differences between them. This may be caused by:
additional hormones in the mother’s system – possibly as a result of taking medication
the foetus’ insensitivity to the hormones, known as androgen insensitivity syndrome (AIS) – when this happens, gender dysphoria may be caused by hormones not working properly in the womb
Gender dysphoria may also be the result of other rare conditions, such as:
congenital adrenal hyperplasia (CAH) – where a high level of male hormones are produced in a female foetus. This causes the genitals to become more male in appearance and, in some cases, the baby may be thought to be biologically male when she is born.
intersex conditions – which cause babies to be born with the genitalia of both sexes (or ambiguous genitalia). Parents are recommended to wait until the child can choose their own gender identity before any surgery is carried out.
This is after it get's don telling us about sex being assigned at birth, and how gender non conformance in children is an early warning sign. Sooooo do we think this page was written by a doctor, or...
see here for full word salad