Restless legs syndrome in Wilson's disease: frequency, characteristics, and mimics

M. C. Trindade, T. Bittencourt, G. Lorenzi-Filho, R. C. Alves, D. C. de Andrade, E. T. Fonoff, E. Bor-Seng-Shu, A. A. Machado, M. J. Teixeira, E. R. Barbosa, G. G. Tribl*

*Kontaktforfatter

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

16 Citationer (Scopus)

Abstract

Objective: To determine characteristics, clinical significance, frequency, and mimics of restless legs syndrome (RLS) in a cohort of Wilson's disease (WD, n = 42/f = 18), compared to healthy, matched controls. Materials and methods: Structured clinical interviews (patients and caregiving family members), repeated neurological examinations (afternoon and presleep), comprehensive laboratory tests, WD-, RLS-, and sleep-specific rating scales, and video-polysomnography. Results: Thirteen patients with WD (13/42 = 31.0%) clearly fulfilled the five diagnostic criteria of RLS; in eight patients (19.1%), the burden of RLS was clinically significant. The RLS was of moderate severity, equally distributed among sexes, manifested mainly in the evening and before falling asleep, and had developed mostly after clinical manifestation of WD (time elapsed 10.2 ± 14.5 years), still at a young mean age (27.5 ± 11.5 years). The known RLS-associated features were absent (normal iron and kidney parameters) or rare (positive family history, polyneuropathy). Compared to WD patients without RLS, patients with RLS were significantly elder and had suffered longer from WD. WD-specific RLS mimics as well as RLS confounding motor comorbidities (dystonia, tremor, chorea) were frequent and a diagnostic challenge; in difficult cases, the differentiation was reached by clinical observation of the motor behavior in the evening or at nighttime. Conclusion: RLS was frequent in this cohort of WD and might be causally related to WD. RLS should be included in the diagnostic work-up of WD. In complex motor disorders, differential diagnosis of RLS might require evening/nighttime examination and video-polysomnography. In WD patients with a clinically significant RLS, treatment with dopaminergic substances may be considered.

OriginalsprogEngelsk
TidsskriftActa Neurologica Scandinavica
Vol/bind135
Udgave nummer2
Sider (fra-til)211-218
Antal sider8
ISSN0001-6314
DOI
StatusUdgivet - 1 feb. 2017
Udgivet eksterntJa

Bibliografisk note

Publisher Copyright:
© 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd

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