 Hi, I'm Clint Black. Have you heard of Rett syndrome? I hadn't until my niece Courtney was diagnosed. Rett syndrome is a neurological disorder which occurs mostly in girls. It's often misdiagnosed as autism or cerebral palsy. Rett syndrome strikes without warning. A girl with Rett syndrome starts out as a happy, healthy baby until six or 18 months of age when something goes terribly