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MMPI indices in the identification of patients evidencing pseudoseizures

T F Henrichs1, D M Tucker, J Farha

  • 1Department of Psychiatry, University of Missouri-Columbia 65212.

Epilepsia
|March 1, 1988
PubMed

Insights

The configural rule system effectively predicts pseudoseizures, while the Pseudo-Neurologic Scale does not. This finding aids in ruling out pseudoseizure probability using psychological assessments.

Area of Science:

  • Psychological assessment
  • Neurology
  • Clinical psychology

Background:

  • Pseudoseizures are functional neurological symptoms.
  • Accurate diagnosis is crucial for effective treatment.
  • Psychological assessment tools may aid in differential diagnosis.

Purpose of the Study:

  • To evaluate the clinical utility of two Minnesota Multiphasic Personality Inventory (MMPI) indices for predicting pseudoseizures.
  • To compare the diagnostic accuracy of the Pseudo-Neurologic (Pn) Scale and the Wilkus et al. configural rule system.

Main Methods:

  • Analysis of base rates, hit rates, and error rates for each MMPI index.
  • Application of the Pseudo-Neurologic (Pn) Scale.
  • Application of the Wilkus et al. configural rule system.

Main Results:

  • The Wilkus et al. configural rule system demonstrated clinical value in ruling out pseudoseizure probability.
  • The Pseudo-Neurologic (Pn) Scale was found to have limited utility in this predictive capacity.
  • Differential diagnostic accuracy varied between the two assessment methods.

Conclusions:

  • The configural rule system is a valuable tool for excluding the diagnosis of pseudoseizures.
  • The Pseudo-Neurologic (Pn) Scale is less effective for pseudoseizure prediction.
  • Psychological assessment plays a role in the differential diagnosis of functional neurological symptoms.

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