Imagine the effect on your confidence in your own identity if, for the first twelve years of your life, you have believed yourself to be a boy and then you start to develop breasts, or, having always been told you were a girl, you notice hair appearing on your chest. Puberty is a period of great sensitivity and awkward awareness of our bodies at the best of times, and unanticipated alterations of such magnitude are understandably devastating to a young person.
