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Related Experiment Video

Updated: Mar 18, 2026

Generating Acute and Chronic Experimental Models of Motor Tic Expression in Rats
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Late-Onset Psychogenic Chronic Phonic-Tics.

Thiago Cardoso Vale1, José Luiz Pedroso2, Marcos Knobel2

  • 1Department of Internal Medicine, Faculty of Medicine, Federal University of Juiz de Fora, Juiz de Fora, Brazil.

Tremor and Other Hyperkinetic Movements (New York, N.Y.)
|July 5, 2016
PubMed
Summary

Late-onset psychogenic tics are rare, with a 67-year-old female case showing no identifiable cause or childhood history. Diagnosis and quetiapine treatment offered mild improvement for these adult-onset tics.

Keywords:
TicsTourette syndromeadult ticsidiopathic ticsphonic tics

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Area of Science:

  • Neurology
  • Psychiatry

Background:

  • Late-onset tics typically have a clear cause.
  • Psychogenic tics appearing around age 60 are seldom documented.

Purpose of the Study:

  • To report a rare case of psychogenic tics with late-onset in a 67-year-old female.
  • To highlight the diagnostic considerations for adult-onset tics without identifiable etiology.

Main Methods:

  • Case report of a 67-year-old female with an 8-year history of phonic tics.
  • Exclusion of secondary causes and childhood tic disorder.
  • Diagnosis of psychogenic tics and treatment with quetiapine.

Main Results:

  • The patient experienced uncontrollable phonic tics without premonitory sensations or precipitating factors.
  • No history of childhood tic disorder or secondary causes were identified.
  • Quetiapine treatment resulted in mild improvement of symptoms.

Conclusions:

  • Psychogenic disorders should be suspected in cases of adult-onset tics with no identifiable cause.
  • Clinical clues are important for diagnosing psychogenic tics in older adults.
  • This case adds to the limited literature on late-onset psychogenic tics.