This transcript was prepared by a transcription service. This version may not be in its final form and may be updated. Kate Linebaugh: Last week I got on the phone with a girl who's been suffering ...

Tic disorders are conditions featuring sudden, non-rhythmic movements or vocalizations. A formal tic disorder diagnosis is determined by tic frequency, duration, and type. Tics are non-rhythmic ...

Functional tics are dramatic, involuntary movements or sounds usually made in response to a trigger. While similar to other tic disorders, they have different causes and treatment options. Functional ...