Celine Dion has been diagnosed with stiff person syndrome, a rare neurological condition that causes spasms and muscle rigidity. This condition has caused her to cancel her "Courage World Tour" dates through 2024. Despite undergoing daily physical therapy, she is still in a lot of pain. Dion has a great team of medical professionals and her childrens support, and she is working hard with her sports medicine therapist every day to build back her strength and ability to perform again. Her sister has shared that Celine is doing everything to recover and that they are crossing their fingers that researchers will find a remedy for this awful illness.