"Gender dysphoria is a rare experience in society as a whole, affecting about 0.4 per cent of the population, which can make it hard to explain to the vast majority of people, who have not experienced it. To get around this, we often rely on metaphors. The clumsy phrase ‘born in the wrong body’ has become the favoured soundbite in popular media. Clumsy because – and this must be stressed – many trans people do not think this describes dysphoria at all well. To my mind, the trans writer Andrea Long Chu expresses it more accurately: "Dysphoria," she says, "can feel like heartbreak." Heartbreak, its incapacitating grief and the sense of absence and loss which activate the same parts of the brain as physical pain, can be so all-consuming it interferes with your everyday life. So, too, dysphoria. For me, at least, this is a much richer way of describing how many trans people experience distress with their bodies – indeed, how I felt until I medically transitioned."