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Updated: May 3, 2026

Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform
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Conversion "v" profiles in torticollis.

M Jahanshahi1, C D Marsden1

  • 1MRC Human Movement and Balance Unit and Department of Clinical Neurology, Institute of Neurology, The National Hospital, Queen Square, London, WC1N 3BG.

Behavioural Neurology
|February 4, 2014
PubMed
Summary
This summary is machine-generated.

Spasmodic torticollis is not typically a conversion reaction. Most patients showed normal or mild depression profiles, not the expected hysteria and hypochondriasis scores.

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Area of Science:

  • Neurology
  • Psychiatry
  • Psychosomatic Medicine

Background:

  • Spasmodic torticollis is a focal dystonia.
  • Historically, it has been hypothesized to be a conversion reaction.

Purpose of the Study:

  • To investigate the psychological profiles of patients with spasmodic torticollis.
  • To determine if these profiles align with conversion reaction characteristics.

Main Methods:

  • Evaluated 61 patients diagnosed with spasmodic torticollis.
  • Utilized the Minnesota Multiphasic Personality Inventory (MMPI).
  • Assessed hypochondriasis, depression, and hysteria scales.

Main Results:

  • 36% of patients had normal MMPI profiles.
  • Only 9% exhibited a conversion "V" profile (scores > 70).
  • The majority presented with mild depression.

Conclusions:

  • A personality profile indicative of conversion reaction is not typical for spasmodic torticollis.
  • The findings challenge the conversion disorder hypothesis.
  • Spasmodic torticollis likely has a different underlying etiology.