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Diagnostic agreement in patients with psychogenic movement disorders
Author(s) -
Morgante Francesca,
Edwards Mark J.,
Espay Alberto J.,
Fasano Alfonso,
Mir Pablo,
Martino Davide
Publication year - 2012
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.24903
Subject(s) - psychogenic disease , movement disorders , psychology , conversion disorder , certainty , inter rater reliability , clinical judgment , psychiatry , clinical psychology , medicine , rating scale , medical physics , disease , developmental psychology , pathology , philosophy , epistemology
Background: The reliability and applicability of published diagnostic criteria for psychogenic movement disorders (PMDs) have never been examined. Methods: Eight movement disorder and six general neurologists rated 14 patients diagnosed with PMD and 14 patients diagnosed with organic movement disorders. Raters provided a dichotomous judgment (i.e., psychogenic or organic) upon review of video‐based movement phenomenology and a category of diagnostic certainty based on the Fahn‐Williams and Shill‐Gerber criteria after accessing standardized clinical information. We measured interobserver agreement on the diagnosis and clinical certainty judgment of PMD. Results: In both groups of raters, agreements were “fair” on the video‐based dichotomous judgment, but improved to “substantial” after access to standardized clinical information. “Slight” to “poor” agreement was reached for the “probable” and “possible” categories of diagnostic certainty corresponding to both diagnostic criteria. Conclusions: Diagnosis according to clinical available criteria for PMD yields poor diagnostic agreement. © 2012 Movement Disorder Society