Celine Dion has been diagnosed with stiff person syndrome, a rare neurological condition that causes spasms and muscle rigidity. The condition has no cure and can cause severe and persistent muscle spasms, which can affect every aspect of daily life, including mobility and vocal cords. Dion postponed several performances in December 2022 after learning the reason for her muscle pain and difficulties with mobility. Despite undergoing daily physical therapy, she is still in a lot of pain. Dion has canceled her “Courage World Tour” dates through 2024 due to complications from the syndrome. She has been open about her diagnosis and how the muscle spasms from SPS impact "every aspect" of her life and hinder her ability to perform. Dions openness with her diagnosis has created more empathy toward an often invisible disease.