Distinguishing functional from primary tics: a study of expert video assessments.
Antigony RigasTina MainkaTamara PringsheimAlexander MünchauIrene MalatyYulia WorbeAndrea E CavannaAndrew John LeesAnthony E LangDavide MartinoChristos GanosPublished in: Journal of neurology, neurosurgery, and psychiatry (2023)
This study confirmed that in the absence of clinical information, the diagnostic distinction between primary and functional tics is often difficult, even for expert clinicians.
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