Neurocognitive functioning in patients with conversion disorder/functional neurological disorder

L. de Vroege*, I. Koppenol, W. Kop, M.M.E. Riem, C. van der Feltz-Cornelis

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Neurocognitive symptoms are common in individuals with somatic symptom and related disorders (SSRD), but little is known about the specific impairments in neurocognitive domains in patients with conversion disorder (CD)/functional neurological disorder (FND). This study examines neurocognitive functioning in patients with CD/FND compared to patients with other SSRD. The sample consisted of 318 patients. Twenty-nine patients were diagnosed with CD/FND, mean age 42.4, standard deviation (SD) = 13.8 years, 79.3% women, and 289 patients had other SSRD (mean age 42.1, SD = 13.3, 60.2% women). Patients completed a neuropsychological test battery that addressed a broad range of neurocognitive domains, including information processing speed, attention and executive functioning. Patients with CD/FND had clinically significant neurocognitive deficits in all neurocognitive domains based on normative data comparison. Patients with CD/FND also performed significantly worse than patients with other SSRD on information processing speed (Digit Symbol Substitution Test (V = .115, p = .035), Stroop Color-Word Test (SCWT) card 1 (V = .190, p = .006), and SCWT card 2 (V = .244, p < .001). No CD/FND vs. other SSRD differences were observed in other neurocognitive domains. These findings indicate the patients with CD/FND perform worse on information processing speed tests compared to patients with other SSRD.
Original languageEnglish
Article number12206
Number of pages19
JournalJournal of Neuropsychology
DOIs
Publication statusE-pub ahead of print - 2020

Keywords

  • CONTROLLED CLINICAL-TRIAL
  • DEFICITS
  • DEPRESSION
  • GENERALIZED ANXIETY DISORDER
  • HYPNOSIS
  • INHIBITION
  • PSYCHOGENIC NONEPILEPTIC SEIZURES
  • SOMATOFORM DISORDERS
  • SYMPTOMS
  • THERAPY
  • conversion disorder
  • functional neurological disorder
  • neurocognitive functioning
  • neuropsychology
  • somatic symptom and related disorders

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