In this episode of Talk Nerdy, Cara is joined by Dr. Haider Warraich, a cardiologist at Brigham and Women's Hospital, Harvard Medical School, and the VA Boston Healthcare System. They talk about his new book, "The Song of Our Scars: The Untold Story of Pain," including the multidimensionality of chronic pain and how the healthcare profession can better serve those who suffer from it. Follow Haider: @haiderwarraich.