The definition of tic disorders can be challenging. \citet{Bartha2023a} included 127 patients (mean age 19.8 years) with tic disorders and 129 healthy controls (mean age 19.3 years). Showed that extra movements are common in healthy controls and therefore the diagnostic criterion of the occurrence of motor or vocal tics as described in the DSM V might be questioned. They suggest that movement patterns and temporal characteristics might be more useful in the definition of diagnostic criteria for tic disorders.