Celine Dion chronicles her battle back to the stage after stiff person syndrome diagnosis in documentary trailer

​ Celine Dion knows how powerful love can be. This is especially apparent in the new trailer for her upcoming documentary “I Am: Celine Dion,” in which she showcases how much her love of singing and performing live keeps her going while living with stiff person syndrome, a rare neurological disorder. Read More Breaking News, Latest News and Videos | CNN