Availability of data and material
Not applicable.
Code availability
Not applicable.
References
Machado A, Chien HF, Deguti MM et al (2006) Neurological manifestations in Wilson’s disease: report of 119 cases. Mov Disord 21:2192–2196
Wardt JV, van der Stouwe AMM, Dirkx M, Elting JWJ, Post B, Tijssen MA, Helmich RC (2020) Systematic clinical approach for diagnosing upper limb tremor. J Neurol Neurosurg Psychiatry 91:822–830
Stone J, Reuber M, Carson A (2013) Functional symptoms in neurology: mimics and chameleons. Pract Neurol 13:104–113
Elmalı AD, Gündüz A, Poyraz BÇ, Kızıltan ME, Ertan S (2017) A case illustrating how tremor of Wilson’s disease may mimic functional tremor. Acta Neurol Belg 117:351–353
Schwingenschuh P, Saifee TA, Katschnig-Winter P et al (2016) Validation of “laboratory-supported” criteria for functional (psychogenic) tremor. Mov Disord 31:555–562
Reuber M, Fernández G, Bauer J, Singh DD, Elger CE (2002) Interictal EEG abnormalities in patients with psychogenic nonepileptic seizures. Epilepsia 43:1013–1020
McWhirter L, Ritchie C, Stone J, Carson A (2020) Functional cognitive disorders: a systematic review. Lancet Psychiatry 7:191–207
Kurtis MM, Pareés I (2021) Functional movement disorder comorbidity in Parkinson’s disease: unraveling the web. Park Relat Disord 82:138–145
Acknowledgements
We are thankful to our patient and her family for participating in this study.
Funding
This research is not funded.
Author information
Authors and Affiliations
Contributions
NO, HS, NG: research project: organization, execution, manuscript preparation: writing of the first draft. AS: research project: conception, execution, manuscript preparation: review and critique.
Corresponding author
Ethics declarations
Conflict of interest
None.
Ethical approval
This study was performed in accordance with the ethical standards of our institutional research ethics committee and with the 1975 Helsinki declaration.
Consent to participate
Informed consent was obtained from the patient.
Consent for publication
Informed consent was obtained from the patient.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Supplementary Information
Below is the link to the electronic supplementary material.
Supplementary video1 (MP4 17005 KB) Supplementary Video: Part 1: course tremor of the upper limbs at rest and action. Part 2: tremor of the jaw, involuntary blinking, and retrocollis. Part 3: effect of ballistic movements on contralateral arm tremor. Part 4: mild improvement of tremor and retrocollis at 6-month follow-up. Part 5: dramatic improvement of tremor at last follow-up.
Rights and permissions
About this article
Cite this article
Olfati, N., Shoeibi, A., Charara, H. et al. Functional tremor in Wilson’s disease. Acta Neurol Belg 122, 561–563 (2022). https://doi.org/10.1007/s13760-021-01794-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13760-021-01794-z