Pain is a deeply subjective thing. \n\nWhen it\u2019s with us it\u2019s all we can think about. \n\nSo, what is life like then for someone for whom pain never leaves?\n\nHaider Warraich, Assistant Professor of Medicine at Harvard Medical School and author of 'The Song of Our Scars: The Untold Story of Pain' joins Jonathan to discuss.