Most of us accept the way our heart flutters when we set eyes on the one we secretly admire, or the sweat on our brow as we start the presentation we do not want to give. But few of us are fully aware of how much more dramatic and extreme our body’s reactions to emotions can sometimes be. Up to a third of people who go to see their GP have symptoms that are medically unexplained; in the vast majority of these cases an emotional cause is suspected. And yet, when it comes to a diagnosis, ‘it’s all in your head’ is the very last thing we want to hear, and the last thing doctors want to say. In ‘It’s All in Your Head’ consultant neurologist Dr Suzanne O’Sullivan takes us on a journey through the world of psychosomatic illness, to meet patients like Pauline, who has been ill all her adult life.