Tics and functional tic-like movements

@article{Ganos2019TicsAF,
  title={Tics and functional tic-like movements},
  author={Christos Ganos and Davide Martino and Alberto J. Espay and Anthony E. Lang and Kailash P. Bhatia and Mark J. Edwards},
  journal={Neurology},
  year={2019},
  volume={93},
  pages={750 - 758}
}
Within the broad spectrum of movement disorders, tics and functional tic-like movements belong to a particular clinical category. Both types of movements are within the range of normal movement kinematics and muscle synergies, but appear repetitive and without appropriate context embedment. Historically, there have been many attempts to separate the 2 types of movements, but because of their phenomenological overlap, clinical distinction may be prone to error, and misdiagnoses may often occur… 
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