MDS Abstracts

Abstracts from the International Congress of Parkinson’s and Movement Disorders.

MENU 
  • Home
  • Meetings Archive
    • 2024 International Congress
    • 2023 International Congress
    • 2022 International Congress
    • MDS Virtual Congress 2021
    • MDS Virtual Congress 2020
    • 2019 International Congress
    • 2018 International Congress
    • 2017 International Congress
    • 2016 International Congress
  • Keyword Index
  • Resources
  • Advanced Search

Functional motor disorders phenotypes. Lumping or splitting?

J. Gelauff, J. Rosmalen, J. Stone, J. Gardien, M. Tijssen (Groningen, Netherlands)

Meeting: 2018 International Congress

Abstract Number: 1015

Keywords: Psychogenic movement disorders(PMD): Clinical features, Psychogenic movement disorders(PMD): Etiology and Pathogenesis

Session Information

Date: Sunday, October 7, 2018

Session Title: Phenomenology and Clinical Assessment Of Movement Disorders

Session Time: 1:45pm-3:15pm

Location: Hall 3FG

Objective: To study the differences in demographics, symptom characteristics, levels of impairment and motor symptom overlap between functional motor symptom phenotypes.

Background: The longstanding discussion if functional symptoms should be split into different categories or lumped together, is also clinically relevant within functional motor disorders. A large prospective cohort of functional motor disorders patients provided the opportunity to study if different functional motor symptoms should be split into different categories, based on clinically relevant differences.

Methods: Baseline data gathered for the ongoing Self-Help and Education on the Internet for Functional Motor Disorders Trial (SHIFT) (clinicaltrials.gov: NCT02589886) was used for this study. Patients were divided into five main motor symptom groups: tremor, myoclonus, dystonia, paresis and gait disorder, based on diagnosis of the referring neurologist. Data was collected by means of an online questionnaire. Demographics, levels of impairment, symptom characteristics, non-motor features and motor symptom overlap were compared between groups.

Results: Out of 186 patients included in the SHIFT study, 160 patients could be divided into main motor symptom groups. No statistically significant differences were found concerning age, gender, duration of symptoms, duration of symptom onset, mode of onset and the level of pain, fatigue, depressive symptoms and anxiety. There were significant differences between groups on physical functioning (p=0.003) and work and social adjustment scores (p<0.001), which were lower in gait disorder and paresis patients.

Conclusions: We found no evidence for splitting functional motor symptoms into different categories, based on similar demographics and symptom onset and duration, similar severity of non-motor features fatigue, pain, depression and anxiety and large motor symptom overlap. Patients with functional paresis or gait disorder as a main motor symptom do appear to have more severe impairment of daily functioning. Generally, attention should be payed to the high prevalence of pain and fatigue and the large impairment of daily living that was present in the majority of patients.

To cite this abstract in AMA style:

J. Gelauff, J. Rosmalen, J. Stone, J. Gardien, M. Tijssen. Functional motor disorders phenotypes. Lumping or splitting? [abstract]. Mov Disord. 2018; 33 (suppl 2). https://www.mdsabstracts.org/abstract/functional-motor-disorders-phenotypes-lumping-or-splitting/. Accessed May 13, 2025.
  • Tweet
  • Email
  • Print

« Back to 2018 International Congress

MDS Abstracts - https://www.mdsabstracts.org/abstract/functional-motor-disorders-phenotypes-lumping-or-splitting/

Most Viewed Abstracts

  • This Week
  • This Month
  • All Time
  • Covid vaccine induced parkinsonism and cognitive dysfunction
  • What is the appropriate sleep position for Parkinson's disease patients with orthostatic hypotension in the morning?
  • An Apparent Cluster of Parkinson's Disease (PD) in a Golf Community
  • The hardest symptoms that bother patients with Parkinson's disease
  • Life expectancy with and without Parkinson’s disease in the general population
  • Patients with Essential Tremor Live Longer than their Relatives
  • #23624 (not found)
  • The hardest symptoms that bother patients with Parkinson's disease
  • Three cases of early tremor in the course of Guillain-Barré Syndrome
  • The impact of gastric acid suppressants and antacids on levodopa plasma concentration in patients with Parkinson’s disease
  • To be or not to bupropion: a drug-induced parkinsonism?
  • The Role of MRI and DaTscan in Vascular Parkinsonism: A Case Report
  • Help & Support
  • About Us
  • Cookies & Privacy
  • Wiley Job Network
  • Terms & Conditions
  • Advertisers & Agents
Copyright © 2025 International Parkinson and Movement Disorder Society. All Rights Reserved.
Wiley