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Sensory Processing Difficulties in Functional Neurological Disorder: A Possible Predisposing Vulnerability?

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Patients with functional neurological disorder (FND) often experience sensory processing difficulties, particularly low registration and sensory sensitivity. Anxiety disorders and female gender were linked to these sensory challenges in FND.

Keywords:
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Area of Science:

  • Neuroscience
  • Psychiatry
  • Clinical Psychology

Background:

  • Functional neurological disorder (FND) is a common neuropsychiatric condition marked by sensorimotor impairments.
  • Patients with FND frequently report sensory experiences that trigger or worsen their symptoms.
  • Sensory processing issues are also noted in conditions comorbid with FND, suggesting a role in a biopsychosocial model.

Purpose of the Study:

  • To investigate sensory processing patterns in patients diagnosed with FND.
  • To explore the relationship between sensory processing and other neuropsychiatric characteristics within the FND cohort.

Main Methods:

  • A retrospective cohort study involving 44 FND patients.
  • Sensory processing patterns were assessed using the Adolescent/Adult Sensory Profile questionnaire.
  • Statistical analyses included univariate and multivariate regression to identify associated clinical factors.

Main Results:

  • Most FND patients exhibited sensory processing patterns of low registration, sensory sensitivity, and sensation avoiding compared to norms.
  • Lifetime anxiety disorders predicted higher low registration scores.
  • Female gender and increased medication count predicted higher sensory sensitivity.

Conclusions:

  • Preliminary findings suggest sensory processing difficulties are present in some individuals with FND.
  • Further research with larger, prospective studies is needed to explore links with comorbidities, subtypes, and treatment outcomes.