The medical name for her little-known illness is Stiff Person Syndrome (SPS), a neurological condition that causes muscles to spasm. As we sit down to talk, Celine says it went undiagnosed for years.

Objective Tourette Syndrome (TS) is a neurodevelopmental disorder frequently associated with comorbidities such as OCD, ADHD and autistic spectrum disorders (ASD). Tics are more common in Learning ...