Parents fear for young daughter's safety as her behavior changes dramatically; Rare disorder may explain 11-year-old's sudden odd tics and moodiness; Why is PANDAS so controversial? Medical professionals are divided.
Barbara Walters, Chris Connelly, Christopher Chacon, Diane Sawyer, Elizabeth Vargas, Fantasia Barrino, Geraldo Rivera, Hugh Downs, Liza Minnelli, Mariah Carey, Patty Duke
Documentary
