PPM 5-Market Numeris Survey Results

Céline Dion is opening up about her experience with stiff-person syndrome.

In September, the iconic Canadian singer will be taking the stage for the first time in nearly six years after she publicly revealed that she was diagnosed with stiff-person syndrome, a rare autoimmune neurological disorder that can cause muscle stiffness and, at times, bodily paralysis. Reportedly, it mostly affects women between the ages of 20 and 50.