Celine Dion has been dedicating herself to her recovery as she continues to battle Stiff Person Syndrome (SPS) . The condition, which Celine was diagnosed with in December 2022, is an exceptionally rare autoimmune neurological disorder that chiefly causes progressive muscle stiffness and agonising muscle spasms. It typically starts with stiffness in the trunk and abdomen (the middle of the body) that can spread to the limbs. Over time, this leads to "board-like" rigidity in affected muscles,