Celine Dion has revealed her struggle with a rare condition called “stiff person syndrome” in a new Amazon Prime documentary, “I Am: Celine Dion”. The film shows Dion undergoing physical rehab and experiencing painful episodes of the disease, which causes sudden muscle spasms, body stiffness and breathing problems. Dion speaks candidly about her health struggles and the impact it has had on her career, including cancelling her Las Vegas residency. The documentary also delves into her personal life, including her relationship with her late husband and her role as a mother to her three children. While the film features performances from throughout her career, it showcases her current struggles with singing due to the muscle spasms caused by the disease. Despite this, she remains determined to continue making music and performing for her fans.