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Related Experiment Videos

Adult-Onset Primary Dystonic Tics: A Different Entity?

Roberto Erro1,2, Davide Martino3,4,5, Christos Ganos1,6,7

  • 1Sobell Department of Motor Neuroscience and Movement Disorders University College London (UCL) Institute of Neurology London United Kingdom.

Movement Disorders Clinical Practice
|October 27, 2018
PubMed
Summary

Adult-onset dystonic tics may be a distinct neurological disorder. This study describes 11 patients, suggesting adult dystonic tics might bridge the gap between typical tics and dystonia.

Keywords:
Tourette syndromeadult‐onset dystoniacervical dystoniadystonic ticsmotor ticsphonic ticstics

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Area of Science:

  • Neurology
  • Movement Disorders
  • Clinical Phenotyping

Background:

  • Tics are typically childhood disorders, but late-onset cases occur.
  • Dystonic tics are less understood, especially in adults.
  • Adult-onset dystonic tics' relationship to Tourette's syndrome is unclear.

Purpose of the Study:

  • To describe the clinical characteristics of adult-onset primary dystonic tics.
  • To investigate whether adult-onset dystonic tics represent a distinct entity.

Main Methods:

  • Case series describing 11 patients with adult-onset primary dystonic tics.
  • Clinical assessment of phenomenology, age of onset, affected body regions, and comorbidities.

Main Results:

  • 11 patients with adult-onset primary dystonic tics were identified (10 males).
  • Mean age at onset was 42.2 years; most had cranial-cervical and shoulder involvement.
  • Over 60% experienced both motor clonic and dystonic tics; psychiatric comorbidities were noted in 5 patients.

Conclusions:

  • Adult-onset dystonic tics may constitute a separate entity.
  • This condition appears intermediate between typical tic disorders and primary dystonia.
  • Further research is needed to fully characterize this distinct neurological presentation.