Journal
PARKINSONISM & RELATED DISORDERS
Volume 70, Issue -, Pages 1-6Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.parkreldis.2019.11.018
Keywords
Functional motor disorders; Functional movement disorders; Non-motor features; Conversion disorder; Psychogenic movement disorders
Categories
Funding
- MIND (previously Fonds Psychische Gezondheid)
- European Fund for Regional Development from the European Union [01492947]
- province of Friesland
- Dystonia Medical Research Foundation
- Stichting Wetenschapsfonds Dystonie Vereniging
- Prinses Beatrix Foundation
- Fonds NutsOhra
- Jacques and Gloria Gossweiler Foundation
- Fonds Psychische Gezondheid
- Phelps Stichting
- Ipsen & Allergan Farmaceutics
- Merz
- Medtronic
- Actelion
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Introduction: Functional motor disorders are often delineated according to the dominant motor symptom. In a large cohort, we aimed to find if there were differences in demographics, mode of onset, pain, fatigue, depression and anxiety and levels of physical functioning, quality of life and social adjustment between patients with different dominant motor symptoms. Methods: Baseline data from the Self-Help and Education on the Internet for Functional Motor Disorders Trial was used. Patients were divided into dominant motor symptom groups based on the diagnosis of the referring neurologist. Data on the above topics were collected by means of an online questionnaire and compared between groups using parametric and nonparametric statistics. Results: In 160 patients a dominant motor symptom could be determined, 31 had tremor, 45 myoclonus, 23 dystonia, 30 paresis, 31 gait disorder. No statistical differences between groups were detected for demographics, mode of onset and severity of pain, fatigue, depression and anxiety. Physical functioning was worse in the gait disorder group (median 20, IQR 25) compared to tremor (50 (55), p = 0.002) and myoclonus (50 (52), p = 0.001). Work and social adjustment was less impaired in the myoclonus group (median 20, IQR 18) compared to gait disorder (median 30, IQR18, p < 0.001) and paresis (28, IQR 10, p = 0.001). Self-report showed large overlap in motor symptoms. Conclusion: No differences were detected between groups of functional motor symptoms, regarding demographics, mode of onset, depression, anxiety, pain and fatigue. The large overlap in symptoms contributes to the hypothesis of shared underlying mechanisms of functional motor disorders.
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