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Review Article
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MRI-Guided Focused Ultrasound in Parkinson’s Disease and Essential Tremor: Incisionless but Invasive. A Narrative Review
Vinod Metta, Hani Taha Sherif Benamer, Georgios Kapsas, Rukmini Mridula, Rajesh Alugolu, Hasna Hussain, Afsal Nalarakettil, Sampath Kumar Natuva Sai, Mohamed Elmahdy, Rupam Borgohain, Kallol Ray Chaudhuri
J Mov Disord. 2025;18(4):289-303.   Published online June 4, 2025
DOI: https://doi.org/10.14802/jmd.25042
  • 3,324 View
  • 334 Download
  • 1 Web of Science
  • 1 Crossref
AbstractAbstract PDF
Magnetic resonance-guided focused ultrasound (MRgFUS) is an emerging and promising technology for treating movement disorders, such as essential tremors and tremor-dominant Parkinson’s disease. MRgFUS utilizes advanced ultrasound transducer emitters to condense sound waves at a precisely defined point. This technology can target various brain areas, such as the pallidothalamic tract, thalamus, and pallidum, to ameliorate some of the symptoms of Parkinson’s disease and other movement disorders, such as dystonic and action-induced tremors. We review the current status of preclinical and clinical trials on the clinical use, treatment outcomes, and indications of MRgFUS.

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  • Tremor: Clinical Frameworks, Network Dysfunction and Therapeutics
    Emmanuel Ortega-Robles, Oscar Arias-Carrión
    Brain Sciences.2025; 15(8): 799.     CrossRef
Brief communication
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Modified Ratio of Tremor/Postural Instability Gait Difficulty Score as an Indicator of Short-Term Outcomes of Subthalamic Nucleus Deep Brain Stimulation in Parkinson’s Disease
Chakradhar Reddy, Kanchana Pillai, Shejoy Joshua, Anup Nair, Harshad Chavotiya, Manas Chacko, Asha Kishore
J Mov Disord. 2025;18(2):165-169.   Published online January 2, 2025
DOI: https://doi.org/10.14802/jmd.24175
  • 2,209 View
  • 65 Download
AbstractAbstract PDFSupplementary Material
Objective
The outcomes of motor and nonmotor features of Parkinson’s disease (PD) following deep brain stimulation (DBS) vary among its subtypes. We tested whether preoperative motor subtyping using the modified tremor/postural instability and gait difficulty ratio (T/P ratio) could indicate the short-term motor, nonmotor and quality of life (QOL) outcomes of subthalamic nucleus (STN) DBS.
Methods
In this prospective study, 39 consecutive STN DBS patients were assessed in the drug-OFF state before surgery and subtyped according to the T/P ratio. Patients were reassessed 6 months after surgery in the stimulation ON-drug-OFF state, and the percentage changes in motor, nonmotor and QOL scores (Parkinson’s Disease Quality of Life Questionnaire [PDQ-39]) were calculated.
Results
The modified T/P ratio was moderately and positively correlated with the percentage change in the Unified Parkinson’s Disease Rating Scale III score in the OFF state, the sum of cardinal motor signs, the Non-Motor Symptom Scale score, and QOL (PDQ-39).
Conclusion
Preoperative PD motor subtyping can be used as an indicator of the short-term outcomes of STN DBS in PD patients.
Original Articles
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Polysomnographic Evaluation of Sleep Disorders in Essential Tremor and Essential Tremor Plus: A Comparison With Healthy Controls
Ravi Prakash Singh, Mythirayee S, Doniparthi Venkata Seshagiri, Gulshan Kumar, Rohan Mohale, Pramod Kumar Pal, Bindu M Kutty, Jitender Saini, Nitish L Kamble, Vikram Holla, Ravi Yadav
J Mov Disord. 2025;18(1):45-54.   Published online October 28, 2024
DOI: https://doi.org/10.14802/jmd.24191
  • 4,827 View
  • 130 Download
AbstractAbstract PDF
Objective
To explore sleep patterns in individuals with essential tremor (ET) and essential tremor plus (ET-Plus) compared with healthy controls and assess differences between ET and ET-Plus, given the lack of established polysomnography (PSG) data on these groups and the potential for sleep disturbances to serve as clinical markers.
Methods
We conducted a prospective cross-sectional study at National Institute of Mental Health and Neurosciences, Bengaluru, from November 2021 to August 2023 on 45 patients (26 ET, 19 ET-Plus) and 45 controls. Tremor severity was assessed using The Essential Tremor Rating Assessment Scale (TETRAS) and Fahn‐Tolosa‐Marin Clinical Rating Scale (FTMRS). Sleep symptoms were assessed via the Epworth Sleepiness Scale, Pittsburgh Sleep Quality Index, Mayo Sleep Questionnaire, restless legs syndrome questionnaire, Berlin questionnaire, Generalized Anxiety Disorder Scale 7, and Patient Health Questionnaire-9. All patients and controls underwent overnight video PSG. Sleep scoring was manually performed by a trained sleep research technician and the first author following the American Academy of Sleep Medicine (2017) guidelines, with data analyzed using R studio.
Results
Compared with ET-Plus patients, ET patients had a younger onset age (46.8±11.1 years versus 30.8±16.7 years, respectively). Compared with ET patients, ET-Plus patients had higher TETRAS and FTMRS scores (p<0.005). Compared with controls, both ET patients and ET-Plus patients presented poorer sleep quality, excessive daytime sleepiness, rapid eye movement (REM) sleep behavior disorder, and restless legs syndrome symptoms. PSG findings supported these clinical observations, showing an elevated apnea‒hypopnea index, reduced total sleep time, prolonged REM latency, decreased sleep efficiency, increased N1 stage duration, and reduced N2/N3 durations and percentages in patients versus controls.
Conclusion
The study highlights significant sleep architecture abnormalities in both ET and ET-Plus patients compared with healthy controls, with no differences between the ET groups.
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Analysis of Semiology, Lesion Topography and Treatment Outcomes: A Prospective Study on Post Thalamic Stroke Holmes Tremor
Amlan Kusum Datta, Adreesh Mukherjee, Sudeshna Malakar, Atanu Biswas
J Mov Disord. 2024;17(1):71-81.   Published online October 20, 2023
DOI: https://doi.org/10.14802/jmd.23095
  • 5,765 View
  • 508 Download
  • 1 Web of Science
  • 1 Crossref
AbstractAbstract PDFSupplementary Material
Objective
Holmes tremor (HT) comprises rest, postural and intention tremor subtypes, usually involving both proximal and distal musculature. Perturbations of nigro-striatal pathways might be fundamental in the pathogenesis of HT along with cerebello-thalamic connections.
Methods
Nine patients with an HT phenotype secondary to thalamic stroke were included. Epidemiological and clinical records were obtained. Structural and functional brain imaging were performed with magnetic resonance imaging (MRI) or computed tomography (CT) and positron emission tomography (PET), respectively. Levodopa was administered in sequentially increasing dosage, with various other drugs in case of inadequate response. Longitudinal follow-up was performed for at least three months. The essential tremor rating assessment scale (TETRAS) was used for assessment.
Results
The mean latency from stroke to tremor onset was 50.4 ± 30.60 days (range 21–90 days). Dystonia was the most frequently associated hyperkinetic movement (88.8%). Tremor was bilateral in 22.2% of participants. Clinical response was judged based on a reduction in the TETRAS score by a prefixed value (≥ 30%), pertaining to which 55.5% (n = 5) of subjects were classified as responders and the rest as non-responders. The responders showed improvement with significantly lower doses of levodopa than the remaining nonresponders (240 ± 54.7 mg vs. 400 ± 40.8 mg; p = 0.012).
Conclusion
Although levodopa is useful in HT, augmenting the dosage of levodopa beyond a certain point might not benefit patients clinically. Topography of vascular lesions within the thalamus might additionally influence the phenomenology of HT.

Citations

Citations to this article as recorded by  
  • Holmes Tremor with Dystonia after Parietal and Premotor Ischemic Stroke in an Essential Tremor Patient: A Case Report
    Luca Angelini, Rick C.G. Helmich
    Movement Disorders Clinical Practice.2026;[Epub]     CrossRef
Review Articles
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Adult-Onset Genetic Leukoencephalopathies With Movement Disorders
Mu-Hui Fu, Yung-Yee Chang
J Mov Disord. 2023;16(2):115-132.   Published online March 7, 2023
DOI: https://doi.org/10.14802/jmd.22127
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  • 669 Download
  • 1 Web of Science
  • 1 Crossref
  • 1 Comments
AbstractAbstract PDF
Genetic leukoencephalopathies (GLEs) are a group of white matter abnormalities with heterogeneous radiological and phenotypic features. Although these conditions have mostly been described in children, adult-onset cases are increasingly recognized owing to the widespread use of neuroimaging and advances in molecular genetic testing. The disease course is often progressive with a varied spectrum of presentations, trapping neurologists in the dilemma of differential diagnosis. Movement disorders are among the most common symptoms, and their diversity makes diagnosis challenging. In this review, we focus on adult-onset GLEs with movement disorders and offer a step-by-step diagnostic approach by clarifying the phenomenology of movement, advising investigations for acquired causes, describing the clinical and radiological clues to each disease, emphasizing the limitations of advanced molecular testing, and discussing the future application of artificial intelligence. We provide a list summarizing the leukoencephalopathies associated with different categories of movement disorders. In addition to guiding clinicians on how to narrow the list of differential diagnoses with the tools currently available, another aim of this review is to emphasize the inevitable trend toward applying advanced technology in diagnosing these difficult diseases.

Citations

Citations to this article as recorded by  
  • A rare case of adult-onset vanishing white matter leukoencephalopathy with movement disorder, expressing homozygous EIF2B3 and PRKN pathogenic variants
    Bashar Kamal Ali Douden, Yazan Mohammad Abdullah Abufara, Mahmood Fayez Ali Aldrabeeh, Naela Ramadan Mohammad Tell, Ismail Abudaya
    BMC Neurology.2025;[Epub]     CrossRef
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Movement Disorders Associated With Radiotherapy and Surgical Procedures
Bharath Kumar Surisetti, Shweta Prasad, Vikram Venkappayya Holla, Nitish Kamble, Ravi Yadav, Pramod Kumar Pal
J Mov Disord. 2023;16(1):42-51.   Published online January 12, 2023
DOI: https://doi.org/10.14802/jmd.22092
  • 8,281 View
  • 224 Download
  • 4 Web of Science
  • 4 Crossref
AbstractAbstract PDF
Occasionally, movement disorders can occur following interventional procedures including but not limited to radiotherapy, dental procedures, and cardiac, cerebral and spinal surgeries. The majority of these disorders tend to be unexpected sequelae with variable phenomenology and latency, and they can often be far more disabling than the primary disease for which the procedure was performed. Owing to poor knowledge and awareness of the problem, delays in diagnosing the condition are common, as are misdiagnoses as functional movement disorders. This narrative review discusses the phenomenology, pathophysiology, and potential treatments of various movement disorders caused by interventional procedures such as radiotherapy and neurological and non-neurological surgeries and procedures.

Citations

Citations to this article as recorded by  
  • Delayed Holm’s tremor complicated by contralateral midbrain metastasis: A nigrostriatal subtype
    Sang-Won Yoo, Hyochun Lee, Joong-Seok Kim
    Neurological Sciences.2025; 46(5): 2329.     CrossRef
  • Cancer-related movement disorders: A scoping review and diagnostic approach
    Laura E Schroeder, Ethan Snow, Casandra Chen, Amy Addo, Nahid Mohammadzadeh, Lawrence Recht, Saud Alhusaini
    Neuro-Oncology Practice.2025; 12(6): 970.     CrossRef
  • Myoclonus: an update
    Betsy Thomas, Steven J. Frucht
    Current Opinion in Neurology.2024; 37(4): 421.     CrossRef
  • Biofeedback Endurance Training for Gait Rehabilitation in Parkinson’s Disease: a Non-Randomized Controlled Study
    Olga V. Guseva, Natalia G. Zhukova
    Bulletin of Rehabilitation Medicine.2023; 22(6): 21.     CrossRef
Case Report
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Deep Brain Stimulation for Cockayne Syndrome-Associated Movement Disorder
Joseph S. Domino, Rose Gelineau-Morel, Christian Kaufman
J Mov Disord. 2022;15(1):62-65.   Published online November 3, 2021
DOI: https://doi.org/10.14802/jmd.21005
  • 5,816 View
  • 258 Download
  • 2 Web of Science
  • 3 Crossref
AbstractAbstract PDFSupplementary Material
Cockayne syndrome (CS) is a rare progeroid disorder characterized by multisystem degeneration, including neurological dysfunction, for which deep brain stimulation (DBS) is a proposed treatment. This study represents only the third case of DBS for CS-associated movement disorder and the first in which both proposed targets had devices implanted, allowing for direct comparison. A case of DBS for CS-associated movement disorder is presented. Previous literature documents two cases with one targeting the ventral intermediate nucleus of the thalamus (VIM) and the other targeting the globus pallidus interna (GPi). Our patient underwent stimulation of GPi nuclei followed by repositioning to VIM nuclei with improved symptom control using VIM stimulation. In all cases, there was a significant clinical benefit without off-target effects. CS-associated movement disorder exhibits phenotypic variability for which DBS is a viable treatment. Target selection should be driven by clinical phenotype.

Citations

Citations to this article as recorded by  
  • Simultaneous, dual-target, bilateral deep brain stimulation for treatment of galactosemia-induced dystonia and tremor in a pediatric patient
    Adip G. Bhargav, Paige A. Lundy, Keith A. Coffman, Christian B. Kaufman
    Child's Nervous System.2025;[Epub]     CrossRef
  • Cockayne syndrome type 3 with dystonia‐ataxia and clicking blinks
    Özge Berna Gültekin‐Zaim, Gül Yalçın‐Çakmaklı, Ayşe İlksen Çolpak, Pelin Özlem Şimşek‐Kiper, Gülen Eda Utine, Bülent Elibol
    Movement Disorders Clinical Practice.2023;[Epub]     CrossRef
  • Hypomyelinating leukodystrophy and movement disorders
    Jacky Ganguly, Jigyasha Sinha, Purba Basu, Anushree Pal, Banashree Mondal, Mona Tiwari, Hrishikesh Kumar
    Annals of Movement Disorders.2023; 6(2): 58.     CrossRef
Brief communication
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Phonatory Characteristics of Male Patients with Classic Essential Tremor
Preetie Shetty Akkunje, Belur Keshavaprasad Yamini, Ravi Yadav, Nagarajarao Shivashankar, Palash Kumar Malo, Kandavel Thennarasu, Shantala Hegde, Pramod Kumar Pal
J Mov Disord. 2021;14(3):226-230.   Published online August 18, 2021
DOI: https://doi.org/10.14802/jmd.21010
  • 6,775 View
  • 109 Download
  • 3 Web of Science
  • 3 Crossref
AbstractAbstract PDFSupplementary Material
Objective
Voice tremor (VT) is one of the characteristics of essential tremor (ET). This study was designed to describe the group and phonatory characteristics of classic ET patients with VT.
Methods
This retrospective case-control study compared classic ET patients with age and sex-matched controls. The ET population was subgrouped based on auditory perceptual voice analysis. Electroglottography and acoustic voice samples obtained from both groups were analyzed for contact quotient (CQ) and multidimensional voice program parameters, i.e., fundamental frequency (F0), perturbation, noise, and tremor parameters.
Results
The CQ, F0, perturbation, noise, and tremor characteristics significantly increased from the moderate VT group to the severe VT group.
Conclusion
The CQ, F0, and noise characteristics reflected the vocal folds’ functionality. The perturbation and tremor parameters variation were reasoned considering the tremor-related changes occurring in the laryngeal, vocal tract, and expiratory muscles in patients with ET. Thus, phonatory analysis may help in monitoring the progression of ET.

Citations

Citations to this article as recorded by  
  • Voice Analysis in Patients with Essential Tremor
    Hakan Silek, Muzeyyen Dogan
    Journal of Voice.2025; 39(5): 1414.e9.     CrossRef
  • Central auditory processing deficits in essential tremor
    Preetie Shetty Akkunje, Belur Keshavaprasad Yamini, Ravi Yadav, Shantala Hegde, Aravind Kumar Rajasekaran, Pradeep Yuvaraj, Prashasti Prakash Poovaiah, Parthipulli Vasuki Prathyusha, Kandavel Thennarasu, Nagarajarao Shivashankar, Pramod Kumar Pal
    Clinical Neurophysiology.2025; 176: 2110764.     CrossRef
  • Exploiting speech tremors: machine learning for early diagnosis of amyotrophic lateral sclerosis
    Ritu Chauhan, Urvashi Sharma
    Engineering Research Express.2024; 6(4): 045224.     CrossRef
Case Report
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Involuntary Movements Following Administration of Hydroxychloroquine for COVID-19 Pneumonia
Emmaline Zantua Fernando, Jeryl Ritzi Tan Yu, Salvador Miclat Abad Santos, Roland Dominic Go Jamora
J Mov Disord. 2021;14(1):75-77.   Published online December 7, 2020
DOI: https://doi.org/10.14802/jmd.20091
  • 8,125 View
  • 126 Download
  • 4 Web of Science
  • 2 Crossref
AbstractAbstract PDFSupplementary Material
Hydroxychloroquine (HCQ) has been used as an investigational drug for patients with moderate to severe coronavirus disease 2019 (COVID-19). There have been concerns of potential harms from side effects of the drug. We present a case of a 38-year-old male who was started on HCQ for COVID-19 pneumonia. He was referred for evaluation of myoclonus of all extremities, which resolved after discontinuation of HCQ. The involuntary movements were first reported after the initiation of HCQ, persisted despite improvement in inflammatory and radiologic parameters and eventually resolved after HCQ discontinuation. This supports a possible causality related to adverse drug reactions from HCQ that have not been commonly reported.

Citations

Citations to this article as recorded by  
  • Safety profile of COVID-19 drugs in a real clinical setting
    Mei Nee Chiu, Maitry Bhardwaj, Sangeeta Pilkhwal Sah
    European Journal of Clinical Pharmacology.2022; 78(5): 733.     CrossRef
  • Eventos adversos no sistema nervoso central potencialmente relacionados aos medicamentos utilizados na COVID-19: revisão de escopo
    Vinícius de Mello, Vinícius de Paula Pereira, João Paulo Vilela Rodrigues, Suelem Tavares da Silva Penteado, Leonardo Régis Leira Pereira, Fabiana Rossi Varallo
    Revista Panamericana de Salud Pública.2022; 46: 1.     CrossRef
Review Article
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Principles of Electrophysiological Assessments for Movement Disorders
Kai-Hsiang Stanley Chen, Robert Chen
J Mov Disord. 2020;13(1):27-38.   Published online January 31, 2020
DOI: https://doi.org/10.14802/jmd.19064
  • 25,173 View
  • 2,034 Download
  • 43 Web of Science
  • 44 Crossref
AbstractAbstract PDFSupplementary Material
Electrophysiological studies can provide objective and quantifiable assessments of movement disorders. They are useful in the diagnosis of hyperkinetic movement disorders, particularly tremors and myoclonus. The most commonly used measures are surface electromyography (sEMG), electroencephalography (EEG) and accelerometry. Frequency and coherence analyses of sEMG signals may reveal the nature of tremors and the source of the tremors. The effects of voluntary tapping, ballistic movements and weighting of the limbs can help to distinguish between organic and functional tremors. The presence of Bereitschafts-potentials and beta-band desynchronization recorded by EEG before movement onset provide strong evidence for functional movement disorders. EMG burst durations, distributions and muscle recruitment orders may identify and classify myoclonus to cortical, subcortical or spinal origins and help in the diagnosis of functional myoclonus. Organic and functional cervical dystonia can potentially be distinguished by EMG power spectral analysis. Several reflex circuits, such as the long latency reflex, blink reflex and startle reflex, can be elicited with different types of external stimuli and are useful in the assessment of myoclonus, excessive startle and stiff person syndrome. However, limitations of the tests should be recognized, and the results should be interpreted together with clinical observations.

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    Behavioural Brain Research.2026; 500: 115979.     CrossRef
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    Christoph S. Dietze, Dieke van Waart-Houtman, Anne Marthe Meppelink, Mireille Bourez-Swart, Job van der Palen, Maeike Zijlmans, Sandra M. A. van der Salm
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    Anna Latorre, Christos Ganos, Masashi Hamada, Nicolas Phielipp, Lorenzo Rocchi, Shabbir Merchant, Marina A. Tijssen, Sterre van der Veen, Robert Chen
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    Julie Lévi-Strauss, Clémence Marois, Yulia Worbe, Laurine Bedoucha, Raouf Benchikh Lehocine, Benjamin Rohaut, Nicolas Weiss, Sophie Demeret, Emmanuelle Apartis, Virginie Lambrecq
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    Regenerative Therapy.2025; 29: 563.     CrossRef
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    Epileptic Disorders.2025; 27(4): 609.     CrossRef
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    Andressa Silva da Silva, Eduardo F. Ribeiro, Jelle R. Dalenberg, Alexandru C. Telea, Marina A.J. Tijssen, João Luiz Dihl Comba
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  • Functional Patients Referred for Deep Brain Stimulation: How Common Is it?
    Carolina Gorodetsky, Paula Azevedo, Alfonso Fasano
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    Sterre van der Veen, John N. Caviness, Yasmine E.M. Dreissen, Christos Ganos, Abubaker Ibrahim, Johannes H.T.M. Koelman, Ambra Stefani, Marina A.J. Tijssen
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    Boby V Maramattom
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    Robert Chen
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    Abhishek Lenka, Joseph Jankovic
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  • Wearable monitoring of positive and negative myoclonus in progressive myoclonic epilepsy type 1
    Saara M. Rissanen, Jelena Hyppönen, Katri Silvennoinen, Laura Säisänen, Pasi A. Karjalainen, Esa Mervaala, Reetta Kälviäinen
    Clinical Neurophysiology.2021; 132(10): 2464.     CrossRef
  • Evaluation of movement and brain activity
    Mark Hallett, Lourdes M. DelRosso, Rodger Elble, Raffaele Ferri, Fay B. Horak, Stephan Lehericy, Martina Mancini, Masao Matsuhashi, Riki Matsumoto, Muthuraman Muthuraman, Jan Raethjen, Hiroshi Shibasaki
    Clinical Neurophysiology.2021; 132(10): 2608.     CrossRef
  • Clinical and Psychological Aspects of Myoclonus in Different age Periods
    Т.А. Литовченко, О.Ю. Сухоносова
    Психиатрия, психотерапия и клиническая психология.2021; (2): 303.     CrossRef
  • FEATURES OF EPILEPTIC MYOCLONIC SEIZURES IN PATIENTS AT DIFFERENT AGE PERIODS
    T. A. Litovchenko, O. Yu. Sukhonosova, A. I. Ekzarkhova, S. M. Korenev, V. V. Salnikova, V. B. Olenich
    International Medical Journal.2021; (4(108)): 61.     CrossRef
  • Minimum Electromyographic Burst Duration in Healthy Controls: Implications for Electrodiagnosis in Movement Disorders
    Alexis F. Collins, Steven T.R. Brown, Mark R. Baker
    Movement Disorders Clinical Practice.2020; 7(7): 827.     CrossRef
  • Physiology-Based Treatment of Myoclonus
    Ashley B. Pena, John N. Caviness
    Neurotherapeutics.2020; 17(4): 1665.     CrossRef
Case Report
Treatment of Hemichoreoathetosis with Arrhythmic Proximal Tremor after Stroke: The Role of Zona Incerta as a Target for Deep Brain Stimulation
Andrei Koerbel, Augusto Radünz do Amaral, Helena Bedatti Zeh, Eduardo Wollmann, Renata Fabiola Heil Koerbel, Carla Moro, Alexandre Luiz Longo
J Mov Disord. 2019;12(1):47-51.   Published online January 30, 2019
DOI: https://doi.org/10.14802/jmd.18032
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AbstractAbstract PDFSupplementary Material
Deep brain stimulation (DBS) of the zona incerta has shown promising results in the reduction of medically refractory movement disorders. However, evidence supporting its efficacy in movement disorders secondary to hemorrhagic stroke or hemichoreoathetosis is limited. We describe a 48-year-old man who developed progressive hemichoreoathetosis with an arrhythmic, proximal tremor in his right arm following a thalamic hemorrhagic stroke. Pharmacological treatment was carried out with no change in the Abnormal Involuntary Movement Scale (AIMS) score after 4 weeks (14). After six sessions of botulinum toxin treatment, a subtle improvement in the AIMS score (13) was registered, but no clinical improvement was noted. The arrhythmic proximal movements were significantly improved after DBS of the zona incerta with a major decrease in the patient’s AIMS score (8). The response to DBS occurring after the failure of pharmacological and botulinum toxin treatments suggests that zona incerta DBS may be an alternative for postthalamic hemorrhage movement disorders.

Citations

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  • Efficacy and safety of deep brain stimulation in mesencephalic locomotor region for motor function in patients with post-stroke hemiplegia: a study protocol for a multi-center double-blind crossover randomized controlled trial
    Junpeng Xu, Bin Liu, Shuzhen Liu, Zhebin Feng, Yanyang Zhang, Di Liu, Qing Chang, Haonan Yang, Yuhan Chen, Xinguang Yu, Zhiqi Mao
    Frontiers in Neurology.2024;[Epub]     CrossRef
  • Deep brain stimulation for movement disorders after stroke: a systematic review of the literature
    Mitch R. Paro, Michal Dyrda, Srinath Ramanan, Grant Wadman, Stacey-Ann Burke, Isabella Cipollone, Cory Bosworth, Sarah Zurek, Patrick B. Senatus
    Journal of Neurosurgery.2022; : 1.     CrossRef
  • Deep brain stimulation for post-thalamic stroke complex movement disorders
    A. Macerollo, B. Hammersley, M. Bonello, J. Somerset, D. Bhargava, K. Das, J. Osman-Farah, P. R. Eldridge, S. H. Alusi
    Neurological Sciences.2021; 42(1): 337.     CrossRef
  • Neurologic Manifestations of Systemic Disease: Movement Disorders
    Giulietta M. Riboldi, Steven J. Frucht
    Current Treatment Options in Neurology.2021;[Epub]     CrossRef
Original Article
Clinical Characteristics of Involuntary Movement in Hospitalized Patients
Kyum-Yil Kwon, Hye Mi Lee, Seon-Min Lee, Seong-Beom Koh
J Mov Disord. 2019;12(1):31-36.   Published online December 20, 2018
DOI: https://doi.org/10.14802/jmd.18040
  • 9,899 View
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  • 2 Crossref
AbstractAbstract PDF
Objective
Neurological symptoms in hospitalized patients are not rare, and neurological consultation for movement disorders is especially important in evaluating or managing those with various movement disorders. Therefore, we investigated a clinical pattern of in-hospital consultations for various movement disorders in a tertiary care university hospital.
Methods
Over two years, a total of 202 patients (70.7 ± 11.8 years of age) presenting with movement disorders referred to movement disorder specialists were investigated.
Results
The main symptoms referred by nonneurologists were tremor (56.9%), parkinsonism (16.8%), and gait disturbance (8.9%). The most frequent diagnostic category was toxic/metabolic-caused movement disorder (T/MCMD) (35%) with regard to medications, followed by Parkinson’s disease (PD) (16%). Regarding the mode of onset, T/MCMD was the leading cause for acute (68%) and subacute onset (46%), while PD was the leading disorder (31%) for chronic onset.
Conclusion
The current study showed a characteristic pattern of inpatients presenting with movement disorders. Furthermore, our findings highlighted the clinical significance of drug use or metabolic problems for treating this patient population.

Citations

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  • Pattern and frequency of involuntary movements: hospital-based study
    H. N. El Tallawy, A. S. Shalash, M. A. Abdelhamed, R. E. Elsabrout
    The Egyptian Journal of Neurology, Psychiatry and Neurosurgery.2023;[Epub]     CrossRef
  • Clinical Spectrum of Movement Disorders in Neurology Inpatients in a Tertiary Care Centre
    Shabeer Ahmad Paul, Gouranga Prasad Mondal, Ramesh Bhattacharyya, Kartik Chandra Ghosh, Sarbajit Das, Suman Das, Hema Krishna, Chandrakanta Patra
    Journal of Neurosciences in Rural Practice.2021; 12: 581.     CrossRef
Case Report
Holmes’ Tremor with Shoulder Pain Treated by Deep Brain Stimulation of Unilateral Ventral Intermediate Thalamic Nucleus and Globus Pallidus Internus
Sabri Aydın, Huseyin Canaz, Ezgi Tuna Erdogan, Nazlı Durmaz, Barıs Topcular
J Mov Disord. 2017;10(2):92-95.   Published online April 18, 2017
DOI: https://doi.org/10.14802/jmd.16051
  • 9,998 View
  • 129 Download
  • 5 Web of Science
  • 5 Crossref
AbstractAbstract PDF
A 21-year-old male was admitted with severe right arm and hand tremors after a thalamic hemorrhage caused by a traffic accident. He was also suffering from agonizing pain in his right shoulder that manifested after the tremor. Neurologic examination revealed a disabling, severe, and irregular kinetic and postural tremor in the right arm during target-directed movements. There was also an irregular ipsilateral rest tremor and dystonic movements in the distal part of the right arm. The amplitude was moderate at rest and extremely high during kinetic and intentional movements. The patient underwent left globus pallidum internus and ventral intermediate thalamic nucleus deep brain stimulation. The patient improved by more than 80% as rated by the Fahn-Tolosa-Marin Tremor Rating Scale and Visual Analog Scale six months after surgery.

Citations

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  • Efficacy and safety of multiple-target deep brain stimulation in non-parkinsonian movement disorders: a systematic review
    Evangelos Kalogirou, Spyridon Voulgaris, George A Alexiou
    Neurosurgical Review.2025;[Epub]     CrossRef
  • Holmes tremor: an updated review
    Efstratios-Stylianos Pyrgelis, Eleni Agapiou, Efthalia Angelopoulou
    Neurological Sciences.2022; 43(12): 6731.     CrossRef
  • Deep brain stimulation of the posterior subthalamic area as an alternative strategy for management of Holmes tremor: A case report and review of the literature
    Omid Yousefi, Mojtaba Dayyani, Razieh Rezaei, Hooman Kamran, Ali Razmkon
    Surgical Neurology International.2022; 13: 489.     CrossRef
  • Vim stereotactic radiosurgical thalamotomy for drug-resistant idiopathic Holmes tremor: a case report
    Manjul Tripathi, Sahil Mehta, Raghav Singla, Chirag K. Ahuja, Naresh Tandalya, Constantin Tuleasca, Aman Batish, Sandeep Mohindra, Abhinav Agrahari, Rupinder Kaur
    Acta Neurochirurgica.2021; 163(7): 1867.     CrossRef
  • Deep brain stimulation in uncommon tremor disorders: indications, targets, and programming
    Carlo Alberto Artusi, Ashar Farooqi, Alberto Romagnolo, Luca Marsili, Roberta Balestrino, Leonard L. Sokol, Lily L. Wang, Maurizio Zibetti, Andrew P. Duker, George T. Mandybur, Leonardo Lopiano, Aristide Merola
    Journal of Neurology.2018; 265(11): 2473.     CrossRef
Original Articles
Movement Disorders in Non-Wilsonian Hepatic Cirrhotic Patients: The Subgroup Analysis of Various Phenotypes and Associated Risk Factors
Kulthida Methawasin, Piyanant Chonmaitree, Chatchawan Wongjitrat, Suthee Rattanamongkolgul, Thanin Asawavichienjinda
J Mov Disord. 2016;9(2):104-113.   Published online March 28, 2016
DOI: https://doi.org/10.14802/jmd.15047
  • 21,466 View
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AbstractAbstract PDF
Objective
The aim of this subgroup analysis was to identify the risk factors associated with the development of various movement disorder phenotypes.
Methods
Eighty-three non-Wilsonian cirrhotic patients with abnormal movements were allocated into the following groups: intention tremor, bradykinesia, Parkinsonism, and abnormal ocular movements. These movement types were considered the primary outcomes as there was a sufficient sample size. Researchers took into consideration the gender, etiologies of cirrhosis, cirrhosis-related complications, hepatic encephalopathy, medical illness, and some neurological deficits as potential factors associated with these movement disorders.
Results
The male gender (p = 0.002) and alcoholic cirrhosis (p = 0.005) were significant factors for the prevalence of intention tremors. In bradykinesia, hepatic encephalopathy was highly statistically significant (p < 0.001), and females more commonly developed bradykinesia (p = 0.04). The Parkinsonism features in this study were confounded by hyperlipidemia (p = 0.04) and motor or sensory deficits (p = 0.02). Jerky pursuits and a horizontal nystagmus were detected. Jerky pursuits were significantly related to hepatic encephalopathy (p = 0.003) and bradykinesia, but there were no factors associated with the prevalence of nystagmus other than an intention tremor.
Conclusions
The association of alcoholic cirrhosis with the development of intention tremor indicates that the persistent cerebellar malfunction in cirrhotic patients is due to alcohol toxicity. The slowness of finger tapping and jerky pursuit eye movements are significantly associated with hepatic encephalopathy. Thus, further studies are needed to evaluate the diagnostic value of these two signs for an early detection of mild hepatic encephalopathy.

Citations

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  • Unveiling the link: hepatitis C virus and Parkinson’s disease
    Rasha Eletreby, Eman Elhady, Shaimaa Shaheen, Iman Hamza, Ahmed Hashem
    The Egyptian Journal of Neurology, Psychiatry and Neurosurgery.2024;[Epub]     CrossRef
Movement Disorders in Non-Wilsonian Cirrhotic Patients: A Report of the Prevalence and Risk Factors from a Study Done in a Medical School in an Agricultural-Based Community
Kulthida Methawasin, Piyanant Chonmaitree, Chatchawan Wongjitrat, Suthee Rattanamongkolgul, Thanin Asawavichienjinda
J Mov Disord. 2016;9(1):28-34.   Published online December 3, 2015
DOI: https://doi.org/10.14802/jmd.15034
  • 21,935 View
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AbstractAbstract PDF
Objective
Parkinsonism and other movement disorders have previously been reported in the acquired hepatocerebral degeneration associated with portosystemic shunting. However, there is no study to date about their prevalence as has been noted in general practice.
Methods
One hundred and forty-three patients with hepatic cirrhosis from the gastroenterology clinic and internal medicine wards were enrolled. Liver data included the diagnoses, etiologies, assessments of complications, and treatments for cirrhosis. Hepatic encephalopathy was classified with regard to the West Haven criteria for semi-quantitative grading for mental status. Neurological examination results and abnormal involuntary movements were recorded as primary outcomes. Neuro-radiology was used for the detection of severe brain lesions.
Results
Alcoholism was the most common cause of liver cirrhosis. Eighty-three patients (58%) presented with movement disorders. Asterixis was found in one of the cases. The most common movement disorder seen was an intentional tremor at 37.1%, which was followed by bradykinesia, Parkinsonism, and postural tremors at 29.4%, 10.5%, and 6.3%, respectively. The prevalence of movement disorders simultaneously increased with a high Child-Turcotte-Pugh score. The hepatic encephalopathy was grade 1 and 2. With the inclusion of age-range adjustments, we found that alcoholic cirrhosis and hepatic encephalopathy are statistically significant factors [p < 0.05, odds ratio (OR) = 6.41, 95% confidence interval (CI) 1.38–29.71 and p < 0.001, OR = 13.65, 95% CI 4.71–39.54] for the development of movement disorders in non-Wilsonian cirrhotic patients. Conclusions Intentional tremor is a common abnormal movement. Alcoholic cirrhosis and hepatic encephalopathy are significant risk factors in the development of movement disorders in non-Wilsonian cirrhotic patients.

Citations

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  • Investigating the Relationship between Chronic Liver Cirrhosis and Parkinsonism: A Comparative Analysis and a Suggested Diagnostic Scheme
    Tal Sigawi, Omer Hamtzany, Noa Hurvitz, Yuval Ishay, Roy Dayan, David Arkadir, Yaron Ilan
    Clinics and Practice.2024; 14(4): 1375.     CrossRef
  • A Prospective Study of the Prevalence of Parkinsonism in Patients With Liver Cirrhosis
    Diana Apetauerova, Peter Hildebrand, Stephanie Scala, Janet W. Zani, LeeAnne Lipert, Erin Clark, Tanya Fennell, Fredric D. Gordon
    Hepatology Communications.2021; 5(2): 323.     CrossRef
Case Reports
Giant Middle Fossa Epidermoid Presenting as Holmes’ Tremor Syndrome
Bindu Menon, P Sasikala, Amit Agrawal
J Mov Disord. 2014;7(1):22-24.   Published online April 30, 2014
DOI: https://doi.org/10.14802/jmd.14005
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AbstractAbstract PDF
Intracranial dermoids may gradually reach an enormous size before the onset of symptoms. Common clinical presentations of intracranial epidermoid include headache and seizures. We present a case of a 35-year female patient with giant middle fossa epidermoid that presented with Holmes’ tremor syndrome, and we review the relevant literature. To the best of our knowledge, such a presentation has not previously been described in the literature.

Citations

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  • Holmes tremor
    Gabriela B. Raina, Maria G. Cersosimo, Silvia S. Folgar, Juan C. Giugni, Cristian Calandra, Juan P. Paviolo, Veronica A. Tkachuk, Carlos Zuñiga Ramirez, Andrea L. Tschopp, Daniela S. Calvo, Luis A. Pellene, Marcela C. Uribe Roca, Miriam Velez, Rolando J.
    Neurology.2016; 86(10): 931.     CrossRef
  • Movement Disorders Following Cerebrovascular Lesions: Etiology, Treatment Options and Prognosis
    Do-Young Kwon
    Journal of Movement Disorders.2016; 9(2): 63.     CrossRef
A Case of Intractable Psychogenic Essential Palatal Tremor
Eun Joo Chung, Hyun Jung, Sang Jin Kim
J Mov Disord. 2012;5(2):55-56.
DOI: https://doi.org/10.14802/jmd.12013
  • 15,004 View
  • 81 Download
  • 2 Crossref
AbstractAbstract PDF

Essential palatal tremor (EPT) is a rare disorder which shows rhythmic involuntary movement of the muscles of soft palate, especially tensor veli palatini muscle. EPT is classified by two subtypes, which is primary and secondary EPT. Secondary EPT includes psychogenic type. We describe a case of intractable psychogenic EPT.

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  • Essential palatal myoclonus with spontaneous resolution: a rare case report
    Prakriti Lamichhane, Dirishya Bishowkarma, Saral Lamichhane, Shanti Sharma, Shankar Rimal
    Annals of Medicine & Surgery.2025; 87(11): 7719.     CrossRef
  • Botulinum toxin treatment for essential palatal tremors presenting with nasal clicks instead of pulsatile tinnitus: a case report
    Yufeng Ye, Shiyu Liao, Baozhen Luo, Liyan Ni
    Head & Face Medicine.2016;[Epub]     CrossRef
Dopa Responsive Slow Orthostatic Tremor in Parkinson’s Disease
Suk Yoon Lee, Eun Joo Chung, Yeo Jung Kim, Sang Jin Kim
J Mov Disord. 2011;4(2):82-84.
DOI: https://doi.org/10.14802/jmd.11019
  • 19,383 View
  • 89 Download
  • 7 Crossref
AbstractAbstract PDF

Slow orthostatic tremor (OT) occurred to longer and lower frequency regular rhythmic bursts in leg muscle upon standing. The slow OT was often able to clinically confused with orthostatic myoclonus. We described a Parkinson’s disease patient with levodopa responsive slow OT. She showed abnormal movements of more regular rhythms and stable frequency on both legs on standing. These symptoms were aggravated at off state and improved by increasing levodopa.

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  • Three hertz orthostatic tremor as "red flag sign" candidate for multiple system atrophy
    Yuzhou Wang, Churong Liu, Wenhua Zheng, Mengyun Li, Xiaodi Li
    Neurological Sciences.2025; 46(3): 1217.     CrossRef
  • Orthostatic Tremor
    José Fidel Baizabal-Carvallo, Joseph Jankovic
    Seminars in Neurology.2025;[Epub]     CrossRef
  • Tremor in Parkinson's Disease
    Bart E. K. S. Swinnen, Arthur W. G. Buijink, Alberto J. Espay, Rob M. A. de Bie
    Seminars in Neurology.2025;[Epub]     CrossRef
  • Orthostatic myoclonus – A retrospective study of Asian patients
    Yi-Cheng Tai, Hung-Chang Kuo, Yihui Wu, Shih-Pin Hsu
    Journal of the Formosan Medical Association.2022; 121(7): 1310.     CrossRef
  • Therapeutic Devices for Motor Symptoms in Parkinson’s Disease: Current Progress and a Systematic Review of Recent Randomized Controlled Trials
    Joji Fujikawa, Ryoma Morigaki, Nobuaki Yamamoto, Teruo Oda, Hiroshi Nakanishi, Yuishin Izumi, Yasushi Takagi
    Frontiers in Aging Neuroscience.2022;[Epub]     CrossRef
  • Unilateral Pseudo-Orthostatic Tremor Provoked by a Remote Limb Movement in Parkinson’s Disease
    Sang-Won Yoo, Youngje Heo, Joong-Seok Kim, Kwang-Soo Lee
    Journal of Movement Disorders.2020; 13(1): 69.     CrossRef
  • Levodopa-Responsive Primary Slow Orthostatic Tremor: A Premotor Sign of Parkinson’s Disease?
    Fumihito Yoshii, Wakoh Takahashi, Koji Aono
    Case Reports in Neurology.2020; 12(1): 1.     CrossRef
Original Articles
Lateralized Effects of Unilateral Thalamotomy and Thalamic Stimulation in Patients with Essential Tremor
Mi J. Kim, Sang R. Jeon, Sung R. Kim, Myoung C. Lee, Sun J. Chung
J Mov Disord. 2011;4(2):64-67.
DOI: https://doi.org/10.14802/jmd.11013
  • 19,780 View
  • 81 Download
  • 9 Crossref
AbstractAbstract PDF
Background and Purpose

Stereotactic thalamotomy has been an effective surgical procedure in the treatment of medically refractory essential tremor (ET), however, little is known about the bilateral effects of unilateral ventralis intermedius (Vim) thalamotomy and Vim deep brain stimulation (DBS). We studied the lateralized effects of unilateral Vim thalamotomy and Vim DBS in ET patients.

Methods

Vim thalamotomy was performed in 6 patients and Vim DBS in 6. Patients were evaluated preoperatively and at 3 and 6 months postoperatively using the Clinical Rating Scale for Tremor (CRST).

Results

The contralateral Part A (tremor localization/severity rating) and Part B (specific motor tasks/function rating) subscores, and axial subscores of CRST significantly improved after unilateral Vim thalamotomy or Vim DBS. On the side ipsilateral to surgery, ET patients demonstrated no significant improvements in the Part A and Part B subscores of CRST. The Part C (functional disabilities resulting from tremor) subscores and total scores of CRST were significantly improved after surgery.

Conclusions

Vim thalamotomy and DBS may be equally effective for the management of contralateral and axial tremor in ET patients, but both interventions may not improve tremor on the side ipsilateral to surgery.

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  • Wearable peripheral nerve stimulator reduces essential tremor symptoms through targeted brain modulation
    Cuong P. Luu, Jordan Ranum, Youngwon Youn, Jennifer L. Perrault, Bryan M. Krause, Matthew I. Banks, Laura Buyan-Dent, Kip A. Ludwig, Wendell B. Lake, Aaron J. Suminski
    Brain Stimulation.2025; 18(4): 1162.     CrossRef
  • Outcomes of stereotactic thalamotomy in patients of essential tremor: A systematic review
    Sagun Ghimire, Bibechan Thapa, Durga Neupane, Pashupati Pokharel
    Journal of Clinical Neuroscience.2024; 126: 38.     CrossRef
  • Displaced center of pressure on the treated side in individuals with essential tremor after radiofrequency ablation: a longitudinal case–control study
    Atsuya Sato, Takaomi Taira, Kazuya Kitada, Toshiki Ando, Toyohiro Hamaguchi, Michiko Konno, Yoshinori Kitabatake, Toshiyuki Ishioka
    Frontiers in Neurology.2023;[Epub]     CrossRef
  • Commentary on: A Network Approach to Understanding the Effects of Focused Ultrasound for Essential Tremor: Insights into Pathophysiology, Treatment, and Imaging Biomarkers
    Prashin Unadkat, David Eidelberg
    Neurotherapeutics.2022; 19(6): 1883.     CrossRef
  • Deep Brain Stimulation for Tremor: Update on Long-Term Outcomes, Target Considerations and Future Directions
    Naomi I. Kremer, Rik W. J. Pauwels, Nicolò G. Pozzi, Florian Lange, Jonas Roothans, Jens Volkmann, Martin M. Reich
    Journal of Clinical Medicine.2021; 10(16): 3468.     CrossRef
  • Clinical improvement associated with targeted interruption of the cerebellothalamic tract following MR-guided focused ultrasound for essential tremor
    J. Levi Chazen, Harini Sarva, Philip E. Stieg, Robert J. Min, Douglas J. Ballon, Kane O. Pryor, Paul M. Riegelhaupt, Michael G. Kaplitt
    Journal of Neurosurgery.2018; 129(2): 315.     CrossRef
  • Innovations in Functional Neurosurgery and Anesthetic Implications
    Lauren K. Dunn, Marcel E. Durieux, W. Jeffrey Elias, Edward C. Nemergut, Bhiken I. Naik
    Journal of Neurosurgical Anesthesiology.2018; 30(1): 18.     CrossRef
  • Surgical treatments for essential tremor
    Rodger J. Elble, Ludy Shih, Jeffrey W. Cozzens
    Expert Review of Neurotherapeutics.2018; 18(4): 303.     CrossRef
  • The Current Status of Deep Brain Stimulation for the Treatment of Parkinson Disease in the Republic of Korea
    Jung-Il Lee
    Journal of Movement Disorders.2015; 8(3): 115.     CrossRef
Four Cases with Peripheral Trauma Induced Involuntary Movements
Eun Joo Chung, Sang Jin Kim, Won Yong Lee, Jong Seok Bae, Eung Gyu Kim, Sung Hwa Pang
J Mov Disord. 2010;3(2):39-41.
DOI: https://doi.org/10.14802/jmd.10010
  • 11,987 View
  • 68 Download
  • 3 Crossref
AbstractAbstract PDF
Background and Purpose

Although peripheral trauma induced movement disorders have been rarely reported, diagnostic criteria for peripherally induced movement disorders (PIMD) have been established. Because preexisting subclinical movement disorders, or secondary gain for compensation and legal purposes are difficult to confirm, differential diagnosis for physicians still remains difficult.

Case Reports

We present four patients developed movement disorders after relatively various intervals after traffic accident. Three patients of them showed tremor and one patient presented propriospinal myoclonus. In this report, we investigate whether peripheral trauma can lead to movement disorders and describe the relationship between peripheral injury and movement disorders in four cases.

Conclusions

Injury was serious enough to develop involuntary abnormal movements with pain and the latency between injury and the onset of movements in all of cases was less than 1 year. Thus, our cases showed temporal and anatomical correlation between injury and the onset of movement disorder, strongly supporting the cause-and-effect relationship by previous diagnostic criteria for peripherally induced movement disorders.

Citations

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  • Diagnostic Utility of Clinical Neurophysiology in Jerky Movement Disorders: A Review from the MDS Clinical Neurophysiology Study Group
    Anna Latorre, Christos Ganos, Masashi Hamada, Nicolas Phielipp, Lorenzo Rocchi, Shabbir Merchant, Marina A. Tijssen, Sterre van der Veen, Robert Chen
    Movement Disorders Clinical Practice.2025; 12(3): 272.     CrossRef
  • Early onset of propriospinal-like myoclonus in a child following a vertebral fracture
    Carlotta Facini, Marina Barsacchi, Benedetta Piccolo, Emanuela Claudia Turco, Francesco Pisani
    Neurology.2016; 87(9): 956.     CrossRef
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    E. Antelmi, F. Provini
    Sleep Medicine Reviews.2014;[Epub]     CrossRef
Case Reports
Action Tremor Associated with Lamotrigine Monotherapy
Ji-Hye Yang, Sung-Woo Chung, Joong-Seok Kim
J Mov Disord. 2010;3(1):18-19.
DOI: https://doi.org/10.14802/jmd.10005
  • 11,996 View
  • 81 Download
  • 6 Crossref
AbstractAbstract PDF

Lamotrigine (LTG) is associated with a tremor when given in combination with valproic acid; however, a tremor associated with lamotrigine monotherapy is rare. Here, we report a case of positional and action tremor associated with lamotrigine use. Based on the temporal relationship, it is conceivable that lamotrigine increases serotonin transmission or affects basal ganglia dopamine activity, thereby causing the tremor.

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  • Tremor as an intrinsic feature of juvenile myoclonic epilepsy
    Alessia Giugno, Francesco Fortunato, Ilaria Sammarra, Miriam Sturniolo, Enrico Fratto, Iolanda Martino, Rita Nisticò, Antonio Gambardella
    Epilepsia.2025;[Epub]     CrossRef
  • Drug-induced tremor
    T. M. Ostroumova, V. A. Tolmacheva, O. D. Ostroumova
    Neurology, Neuropsychiatry, Psychosomatics.2022; 14(2): 4.     CrossRef
  • Movement disorders associated with antiseizure medications: A systematic review
    Daniel J. Zhou, Spriha Pavuluri, Isha Snehal, Cynthia M. Schmidt, Miguel Situ-Kcomt, Olga Taraschenko
    Epilepsy & Behavior.2022; 131: 108693.     CrossRef
  • Antiseizure Drugs and Movement Disorders
    Michel Sáenz-Farret, Marina A. J. Tijssen, Dawn Eliashiv, Robert S. Fisher, Kapil Sethi, Alfonso Fasano
    CNS Drugs.2022; 36(8): 859.     CrossRef
  • Akinetisch-rigide Bewegungsstörungen unter Antikonvulsiva
    K. Kohlhase, S. Knake, L. Timmermann, F. Rosenow, A. Strzelczyk
    DGNeurologie.2019; 2(4): 287.     CrossRef
  • An Unusual Etiology of Vocal Tremor in a Professional Singer
    Bridget L. Hopewell, Cristen Paige, David O. Francis
    Journal of Voice.2019; 33(5): 730.     CrossRef
A Cerebellar Tremor in a Patient with Human Immunodeficiency Virus-1 Associated with Progressive Multifocal Leukoencephalopathy
Hee-Jin Kim, Jae-Jung Lee, Phil Hyu Lee
J Mov Disord. 2009;2(2):88-90.
DOI: https://doi.org/10.14802/jmd.09024
  • 65,535 View
  • 48 Download
  • 2 Crossref
AbstractAbstract PDF

Progressive multifocal leukoencephalopathy (PML) is a demyelinating disease of the central nervous system (CNS) caused by JC virus infection in oligodendrocytes, especially in patients with acquired immunodeficiency syndrome (AIDS). Movement disorders associated with PML are very rare. Here, we report a case of PML in an AIDS patient who presented with a cerebellar tremor, caused by lesions in the cerebellar outflow tract. A cerebellar tremor can be a rare clinical manifestation in patients with PML.

Citations

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  • Holmes tremor in progressive multifocal leukoencephalopathy: A video case report
    Takako Matsushima, Ryotaro Ikeguchi, Mutsumi Iijima, Ayato Shimomura, Shuntaro Takahashi, Kazuo Nakamichi, Yuko Shimizu, Kazuo Kitagawa
    Clinical and Experimental Neuroimmunology.2024; 15(2): 101.     CrossRef
  • Holmes tremor caused by a natalizumab-related progressive multifocal leukoencephalopathy: a case report and brief review of the literature
    Luca Magistrelli, Domizia Vecchio, Paola Naldi, Cristoforo Comi, Roberto Cantello
    Neurological Sciences.2019; 40(9): 1943.     CrossRef
Disabling Head Tremor in a Patient with DYT1 Mutation
Jae-Hyeok Lee, Dae-Seong Kim, Jae-Wook Cho, Kyung-Pil Park
J Mov Disord. 2009;2(2):86-87.
DOI: https://doi.org/10.14802/jmd.09023
  • 62,066 View
  • 41 Download
  • 1 Crossref
AbstractAbstract PDF

Dystonic head tremor is known to be a feature in some patients with DYT1 mutation. However, isolated tremor of the head without relevant cervical dystonia has rarely been described. We report here a patient with the three-bp GAG deletion in the DYT1 gene (904_906delGAG) who had severe head tremor in the frame of a generalized limb dystonia.

Citations

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  • Head tremor at disease onset: an ataxic phenotype of cervical dystonia
    Aristide Merola, Alok K. Dwivedi, Aasef G. Shaikh, Tamour Khan Tareen, Gustavo A. Da Prat, Marcelo A. Kauffman, Jennie Hampf, Abhimanyu Mahajan, Luca Marsili, Joseph Jankovic, Cynthia L. Comella, Brian D. Berman, Joel S. Perlmutter, Hyder A. Jinnah, Alber
    Journal of Neurology.2019; 266(8): 1844.     CrossRef
Original Article
Unilateral Standing Leg Tremor as the Initial Manifestation of Parkinson Disease
Suk Yun Kang, Sook-Keun Song, Jin-Soo Kim, Young Ho Sohn
J Mov Disord. 2009;2(1):29-32.
DOI: https://doi.org/10.14802/jmd.09007
  • 14,933 View
  • 105 Download
  • 4 Crossref
AbstractAbstract PDF
Background:

The aim of this study was to analyze the different forms of leg tremors exhibited while standing in patients with Parkinson disease (PD), and to determine if the type of leg tremor exhibited is indicative of prognosis or treatment response in PD patients.

Methods:

We studied the clinical characteristics of five PD patients (all women; mean age, 59 years, range, 53–64 years) with unilateral standing leg tremor as the initial manifestation of PD, including their electrophysiological findings and the results of long-term follow-up.

Results:

For each patient, parkinsonism either existed at the time of onset of the initial symptoms or developed later. Patient responses to drugs were generally good, but one patient showed a poor response to drugs, even though she had only a low frequency leg tremor. For two patients whom we could observe during the 10-year follow-up period, neither the leg tremor nor parkinsonism was aggravated.

Conclusions:

There are two forms of unilateral standing leg tremor in PD. One form is high frequency, similar to the primary orthostatic tremor. The other is low frequency and similar to the parkinsonian resting tremor. Based on these observations, it appears that progression might be slow if PD patients have standing leg tremor as the initial manifestation.

Citations

Citations to this article as recorded by  
  • Tremor in Parkinson's Disease
    Bart E. K. S. Swinnen, Arthur W. G. Buijink, Alberto J. Espay, Rob M. A. de Bie
    Seminars in Neurology.2025;[Epub]     CrossRef
  • Orthostatic tremor as initial presentation of Parkinson’s disease
    Y R Chiew
    QJM: An International Journal of Medicine.2023; 116(7): 549.     CrossRef
  • The ‘Postural Rhythm’ of the Ground Reaction Force during Upright Stance and Its Conversion to Body Sway—The Effect of Vision, Support Surface and Adaptation to Repeated Trials
    Stefania Sozzi, Shashank Ghai, Marco Schieppati
    Brain Sciences.2023; 13(7): 978.     CrossRef
  • An unusual initial presentation of Parkinson’s disease: unilateral standing leg tremor
    Jasem Yousef Al-Hashel, Walaa Ahmed Kamel, Philippe Damier, Ahmad Jasem Abdulsalam
    Acta Neurologica Belgica.2020; 120(2): 415.     CrossRef
Review Article
Electrophysiologic Assessments of Involuntary Movements: Tremor and Myoclonus
Hyun-Dong Park, Hee-Tae Kim
J Mov Disord. 2009;2(1):14-17.
DOI: https://doi.org/10.14802/jmd.09004
  • 20,508 View
  • 289 Download
  • 6 Crossref
AbstractAbstract PDF

Tremor is defined as a rhythmical, involuntary oscillatory movement of a body part. Although neurological examination reveals information regarding its frequency, regularity, amplitude, and activation conditions, the electrophysiological investigations help in confirming the tremor, in differentiating it from other hyperkinetic disorders like myoclonus, and may provide etiological clues. Accelerometer with surface electromyogram (EMG) can be used to document the dominant frequency of a tremor, which may be useful as certain frequencies are more characteristic of specific etiologies than others hyperkinetic disorders. It may show rhythmic bursts, duration and activation pattern (alternating or synchronous). Myoclonus is a quick, involuntary movement. Electrophysiological studies may helpful in the evaluation of myoclonus, not only for confirming the clinical diagnosis but also for understanding the underlying physiological mechanisms. Electroencephalogram (EEG)-EMG correlates can give us important information about myoclonus. Jerk-locked back-averaging and evoked potentials with recording of the long-latency, long-loop reflexes are currently available to study the pathophysiology of myoclonus.

Citations

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  • Adaptation of Transcortical Responses in Upper Extremity Movements During an Elbow Visuomotor Tracking Task in Humans
    Olga Dubey, Michael A. Petrie, Richard K. Shields
    Journal of Functional Morphology and Kinesiology.2025; 10(4): 368.     CrossRef
  • DBS in tremor with dystonia: VIM, GPi or both? A review of the literature and considerations from a single-center experience
    Davide Paoli, Russell Mills, Una Brechany, Nicola Pavese, Claire Nicholson
    Journal of Neurology.2023; 270(4): 2217.     CrossRef
  • Posthypoxic Segmental Spinal “Flutter”-Like Myoclonus
    Boby V Maramattom
    Neurology India.2022; 70(5): 2202.     CrossRef
  • The diagnostic value of clinical neurophysiology in hyperkinetic movement disorders: A systematic review
    S. van der Veen, M.R. Klamer, J.W.J. Elting, J.H.T.M. Koelman, A.M.M. van der Stouwe, M.A.J. Tijssen
    Parkinsonism & Related Disorders.2021; 89: 176.     CrossRef
  • How can neurophysiological studies help with movement disorders characterization in clinical practice? A review
    Talyta GRIPPE, Natalia Spinola Costa da CUNHA, Pedro Renato de Paula BRANDÃO, Rubens Nelson Morato FERNANDEZ, Francisco Eduardo Costa CARDOSO
    Arquivos de Neuro-Psiquiatria.2020; 78(8): 512.     CrossRef
  • Epileptic and non-epileptic paroxysmal motor phenomena in newborns
    Carlotta Facini, Carlotta Spagnoli, Francesco Pisani
    The Journal of Maternal-Fetal & Neonatal Medicine.2016; 29(22): 3652.     CrossRef
Case Report
A Case of Familial Cortical Myoclonic Tremor With Epilepsy
Kang-Ho Choi, Tai-Seung Nam, Seong-Min Choi
J Mov Disord. 2008;1(2):93-96.
DOI: https://doi.org/10.14802/jmd.08018
  • 13,016 View
  • 73 Download
AbstractAbstract PDF

Familial cortical myoclonic tremor with epilepsy (FCMTE) is a rare disorder characterized by irregular postural tremor of the limbs, family history of seizures, autosomal dominant inheritance, and a rather benign course. A 23 year-old man who had a history of seizure attack since age 16 showed postural and kinetic tremor and mental retardation (MR). His older sister as well as his mother had similar clinical feature. We report the first case of FCMTE in Korea.


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