How are functional tics diagnosed?

A short film explaining how functional tics are diagnosed and how they are different to the tics seen in Tourette Syndrome and simple tics.
For more about functional tics go to this page - neurosymptoms....
Made by Cognihealth and Pooja Jain for the Neurosymptoms FND guide at www.neurosymptoms.org with input from Prof Jon Stone (University of Edinburgh) and with many thanks for funding from Tiny Changes -tinychanges.com