Journal of Movement Disorders

Pramod Kumar Pal

20 Articles

Historical and More Common Nongenetic Movement Disorders From Asia: Norlinah Mohamed Ibrahim, Priya Jagota, Pramod Kumar Pal, Roongroj Bhidayasiri, Shen-Yang Lim, Yoshikazu Ugawa, Zakiyah Aldaajani, Beomseok Jeon, Shinsuke Fujioka, Jee-Young Lee, Prashanth Lingappa Kukkle, Huifang Shang, Onanong Phokaewvarangkul, Cid Diesta, Cholpon Shambetova, Chin-Hsien Lin; J Mov Disord. 2023;16(3):248-260. Published online June 9, 2023; DOI: https://doi.org/10.14802/jmd.22224

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Abstract PDF Supplementary Material: Nongenetic movement disorders are common throughout the world. The movement disorders encountered may vary depending on the prevalence of certain disorders across various geographical regions. In this paper, we review historical and more common nongenetic movement disorders in Asia. The underlying causes of these movement disorders are diverse and include, among others, nutritional deficiencies, toxic and metabolic causes, and cultural Latah syndrome, contributed by geographical, economic, and cultural differences across Asia. The industrial revolution in Japan and Korea has led to diseases related to environmental toxin poisoning, such as Minamata disease and β-fluoroethyl acetate-associated cerebellar degeneration, respectively, while religious dietary restriction in the Indian subcontinent has led to infantile tremor syndrome related to vitamin B12 deficiency. In this review, we identify the salient features and key contributing factors in the development of these disorders.

KMT2B-Related Dystonia in Indian Patients With Literature Review and Emphasis on Asian Cohort: Debjyoti Dhar, Vikram V Holla, Riyanka Kumari, Neeharika Sriram, Jitender Saini, Ravi Yadav, Akhilesh Pandey, Nitish Kamble, Babylakshmi Muthusamy, Pramod Kumar Pal; J Mov Disord. 2023;16(3):285-294. Published online June 13, 2023; DOI: https://doi.org/10.14802/jmd.23035

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Abstract PDF Supplementary Material: Objective
aaMutations in the KMT2B gene have been identified in patients previously diagnosed with idiopathic dystonia. Literature on KMT2B-related dystonia is sparse in the Indian and Asian populations.
Methods
aaWe report seven patients with KMT2B-related dystonia studied prospectively from May 2021 to September 2022. Patients underwent deep clinical phenotyping and genetic testing by whole-exome sequencing (WES). A systematic literature search was performed to identify the spectrum of previously published KMT2B-related disorders in the Asian subcontinent.
Results
aaThe seven identified patients with KMT2B-related dystonia had a median age at onset of four years. The majority experienced onset in the lower limbs (n = 5, 71.4%), with generalization at a median duration of 2 years. All patients except one had complex phenotypes manifesting as facial dysmorphism (n = 4), microcephaly (n = 3), developmental delay (n = 3), and short stature (n = 1). Magnetic resonance imaging (MRI) abnormalities were present in four cases. WES revealed novel mutations in the KMT2B gene in all patients except one. Compared to the largest cohort of patients with KMT2B-related disorders, the Asian cohort, comprising 42 patients, had a lower prevalence of female patients, facial dysmorphism, microcephaly, intellectual disability, and MRI abnormalities. Protein-truncating variants were more prevalent than missense variants. While microcephaly and short stature were more common in patients with missense mutations, facial dysmorphism was more common in patients with truncating variants. Deep brain stimulation, performed in 17 patients, had satisfactory outcomes.
Conclusion
aaThis is the largest series of patients with KMT2B-related disorders from India, further expanding the clinico-genotypic spectrum. The extended Asian cohort emphasizes the unique attributes of this part of the world.

Nine Hereditary Movement Disorders First Described in Asia: Their History and Evolution: Priya Jagota, Yoshikazu Ugawa, Zakiyah Aldaajani, Norlinah Mohamed Ibrahim, Hiroyuki Ishiura, Yoshiko Nomura, Shoji Tsuji, Cid Diesta, Nobutaka Hattori, Osamu Onodera, Saeed Bohlega, Amir Al-Din, Shen-Yang Lim, Jee-Young Lee, Beomseok Jeon, Pramod Kumar Pal, Huifang Shang, Shinsuke Fujioka, Prashanth Lingappa Kukkle, Onanong Phokaewvarangkul, Chin-Hsien Lin, Cholpon Shambetova, Roongroj Bhidayasiri; J Mov Disord. 2023;16(3):231-247. Published online June 13, 2023; DOI: https://doi.org/10.14802/jmd.23065

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Abstract PDF Supplementary Material: Clinical case studies and reporting are important to the discovery of new disorders and the advancement of medical sciences. Both clinicians and basic scientists play equally important roles leading to treatment discoveries for both cures and symptoms. In the field of movement disorders, exceptional observation of patients from clinicians is imperative, not just for phenomenology but also for the variable occurrences of these disorders, along with other signs and symptoms, throughout the day and the disease course. The Movement Disorders in Asia Task Force (TF) was formed to help enhance and promote collaboration and research on movement disorders within the region. As a start, the TF has reviewed the original studies of the movement disorders that were preliminarily described in the region. These include nine disorders that were first described in Asia: Segawa disease, PARK-Parkin, X-linked dystonia-parkinsonism, dentatorubral-pallidoluysian atrophy, Woodhouse-Sakati syndrome, benign adult familial myoclonic epilepsy, Kufor-Rakeb disease, tremulous dystonia associated with mutation of the calmodulin-binding transcription activator 2 gene, and paroxysmal kinesigenic dyskinesia. We hope that the information provided will honor the original researchers and help us learn and understand how earlier neurologists and basic scientists together discovered new disorders and made advances in the field, which impact us all to this day.

Dystonic Opisthotonus in Kufor-Rakeb Syndrome: Expanding the Phenotypic and Genotypic Spectrum: Sandeep Gurram, Vikram V Holla, Riyanka Kumari, Debjyoti Dhar, Nitish Kamble, Ravi Yadav, Babylakshmi Muthusamy, Pramod Kumar Pal; J Mov Disord. 2023;16(3):343-346. Published online July 25, 2023; DOI: https://doi.org/10.14802/jmd.23098

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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

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Abstract 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.

Myoclonus-Dystonic Presentation of Childhood Onset DYT-GCH1: A Report From India: Praveen Sharma, Vikram V Holla, Sandeep Gurram, Nitish Kamble, Ravi Yadav, Pramod Kumar Pal; J Mov Disord. 2023;16(1):101-103. Published online January 12, 2023; DOI: https://doi.org/10.14802/jmd.22106

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A Genetics Pearl for Counseling Patients with Epsilon-Sarcoglycan Myoclonus-Dystonia
Alissa S. Higinbotham, Suzanne D. DeBrosse, Camilla W. Kilbane
Tremor and Other Hyperkinetic Movements.2023;[Epub] CrossRef

Treatable Ataxias: How to Find the Needle in the Haystack?: Albert Stezin, Pramod Kumar Pal; J Mov Disord. 2022;15(3):206-226. Published online September 7, 2022; DOI: https://doi.org/10.14802/jmd.22069

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Treatable ataxias are a group of ataxic disorders with specific treatments. These disorders include genetic and metabolic disorders, immune-mediated ataxic disorders, and ataxic disorders associated with infectious and parainfectious etiology, vascular causes, toxins and chemicals, and endocrinopathies. This review provides a comprehensive overview of different treatable ataxias. The major metabolic and genetic treatable ataxic disorders include ataxia with vitamin E deficiency, abetalipoproteinemia, cerebrotendinous xanthomatosis, Niemann-Pick disease type C, autosomal recessive cerebellar ataxia due to coenzyme Q10 deficiency, glucose transporter type 1 deficiency, and episodic ataxia type 2. The treatment of these disorders includes the replacement of deficient cofactors and vitamins, dietary modifications, and other specific treatments. Treatable ataxias with immune-mediated etiologies include gluten ataxia, anti-glutamic acid decarboxylase antibody-associated ataxia, steroid-responsive encephalopathy associated with autoimmune thyroiditis, Miller-Fisher syndrome, multiple sclerosis, and paraneoplastic cerebellar degeneration. Although dietary modification with a gluten-free diet is adequate in gluten ataxia, other autoimmune ataxias are managed by short-course steroids, plasma exchange, or immunomodulation. For autoimmune ataxias secondary to malignancy, treatment of tumor can reduce ataxic symptoms. Chronic alcohol consumption, antiepileptics, anticancer drugs, exposure to insecticides, heavy metals, and recreational drugs are potentially avoidable and treatable causes of ataxia. Infective and parainfectious causes of cerebellar ataxias include acute cerebellitis, postinfectious ataxia, Whipple’s disease, meningoencephalitis, and progressive multifocal leukoencephalopathy. These disorders are treated with steroids and antibiotics. Recognizing treatable disorders is of paramount importance when dealing with ataxias given that early treatment can prevent permanent neurological sequelae.

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Rehabilitation in ataxia
Anupam Gupta, NavinB Prakash, Hafis Rahman
Indian Journal of Physical Medicine & Rehabilitation.2023; 33(1): 21. CrossRef

Utility of Clinical Exome Sequencing in Dystonia: A Single-Center Study From India: Vikram Venkappayya Holla, Koti Neeraja, Albert Stezin, Shweta Prasad, Bharat Kumar Surisetti, Manjunath Netravathi, Nitish Kamble, Ravi Yadav, Pramod Kumar Pal; J Mov Disord. 2022;15(2):156-161. Published online March 16, 2022; DOI: https://doi.org/10.14802/jmd.21146

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Objective
With the use of next-generation sequencing in clinical practice, several genetic etiologies of dystonia have been identified. This study aimed to ascertain the utility of clinical exome sequencing (CES) in dystonia and factors suggestive of a genetic etiology.
Methods
This study was a retrospective chart review of patients with dystonia who had undergone CES for the evaluation of dystonia.
Results
Forty-eight patients (35 males, 46 families) with dystonia were studied, with a mean age at onset of 16.0 ± 14.1 (1–58) years. A pathogenic/likely pathogenic variant was found in 20 patients (41.7%) among which 14 patients (29.2%) carried a novel variant. CES was more likely to detect a genetic diagnosis in patients with an early age at onset, i.e., ≤ 20 years.
Conclusion
CES is a useful tool in the diagnostic evaluation of dystonia, with a yield of close to 40%. Patients with an earlier age at onset have a higher likelihood of having dystonia due to a genetic cause than those with a later age at onset.

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Whole exome sequencing and clinical investigation of young onset dystonia: What can we learn?
Jong Hyeon Ahn, Ah Reum Kim, Woong-Yang Park, Jin Whan Cho, Jongkyu Park, Jinyoung Youn
Parkinsonism & Related Disorders.2023; 115: 105814. CrossRef

Long-Term Outcome of Hemimasticatory Spasm: Somdattaa Ray, Nitish Kamble, Ravi Yadav, Pramod Kumar Pal; J Mov Disord. 2022;15(2):146-150. Published online March 16, 2022; DOI: https://doi.org/10.14802/jmd.21067

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Objective
This study aims to identify the demographic, clinical, and therapeutic characteristics of four patients with hemimasticatory spasm (HMS) seen in our outpatient department over a period of 20 years.
Methods
We performed a retrospective chart review of four patients with HMS who visited outpatient services in the Department of Neurology from 2001 to 2020.
Results
The follow-up for all patients ranged from 2 years to 9 years. Three patients had facial or bucco-oral morphea. Two patients maintained long-term improvements in symptoms after being treated with botulinum toxin for 4–7 years, while one patient reported improvement in symptoms with treatment of carbamazepine that subsequently remitted after pregnancy.
Conclusion
This report highlights the long-term outcome of HMS in our patients. Our patients reported a significant reduction or complete resolution of symptoms after treatment, and eventually, two patients were asymptomatic while off treatment.

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Peripherally-induced Movement Disorders: An Update
Abhishek Lenka, Joseph Jankovic
Tremor and Other Hyperkinetic Movements.2023;[Epub] CrossRef

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

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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.

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Voice Analysis in Patients with Essential Tremor
Hakan Silek, Muzeyyen Dogan
Journal of Voice.2023;[Epub] CrossRef

Clinical and Imaging Profile of Patients with Joubert Syndrome: Bharath Kumar Surisetti, Vikram Venkappayya Holla, Shweta Prasad, Koti Neeraja, Nitish Kamble, Ravi Yadav, Pramod Kumar Pal; J Mov Disord. 2021;14(3):231-235. Published online September 16, 2021; DOI: https://doi.org/10.14802/jmd.21066

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Objective
Joubert syndrome (JS) is a rare syndrome characterized by ataxia and the molar tooth sign (MTS) on imaging. The present study aims to explore the clinical and radiological features in a cohort of patients with JS.
Methods
This was a retrospective chart review of patients with JS evaluated by movement disorder specialists.
Results
Nine patients were included in the study. All patients had facial dysmorphism and ocular abnormalities, and 4 patients had dystonia. Ocular tilt reaction and alternate skew deviation (66%) were the most common ocular abnormalities. Horizontally aligned superior cerebellar peduncles were observed in all four patients with diffusion tensor imaging, with a lack of decussation in three. Exome sequencing performed in four patients revealed novel variants in the MKS1, CPLANE1, and PIBF1 genes.
Conclusion
Facial dysmorphism, ocular abnormalities and classical imaging findings were observed in all patients with JS. Apart from ataxia, dystonia and myoclonus are other movement disorders observed in JS.

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Clinical and genetic characteristics of 36 children with Joubert syndrome
Yan Dong, Ke Zhang, He Yao, Tianming Jia, Jun Wang, Dengna Zhu, Falin Xu, Meiying Cheng, Shichao Zhao, Xiaoyi Shi
Frontiers in Pediatrics.2023;[Epub] CrossRef
CEP104 gene may involve in the pathogenesis of a new developmental disorder other than joubert syndrome
Reza Shervin Badv, Mojdeh Mahdiannasser, Maryam Rasoulinezhad, Laleh Habibi, Ali Rashidi-Nezhad
Molecular Biology Reports.2022; 49(8): 7231. CrossRef
Congenital Brain Malformations: An Integrated Diagnostic Approach
Bimal P. Chaudhari, Mai-Lan Ho
Seminars in Pediatric Neurology.2022; 42: 100973. CrossRef

Levodopa-Associated Barking Vocalizations: Shweta Prasad, Pramod Kumar Pal; J Mov Disord. 2021;14(2):164-165. Published online October 31, 2020; DOI: https://doi.org/10.14802/jmd.20086

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Patient Knowledge, Attitude and Perceptions towards Botulinum Toxin Treatment for Movement Disorders in India: Thavasimuthu Nisha Mol, Nitish Kamble, Vikram V. Holla, Rohan Mahale, Pramod Kumar Pal, Ravi Yadav; J Mov Disord. 2021;14(2):126-132. Published online April 26, 2021; DOI: https://doi.org/10.14802/jmd.20094

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Abstract PDF Supplementary Material: Objective
There is limited literature on the knowledge, attitude, and perceptions (KAP) of botulinum toxin (BoNT) treatment among patients and caregivers. The objective of this study was to assess the KAP in patients undergoing BoNT treatment for movement disorders.
Methods
One hundred patients with movement disorders from National Institute of Mental Health and Neurosciences Hospital in Bengaluru, South India, were recruited. The patients underwent demographic, clinical, and Patient Knowledge Questionnaire on Botulinum Toxin Use in Movement Disorders (PKQ-BMD)-based evaluations.
Results
The mean age of patients at the time of presentation was 47.97 ± 14.19 years (range, 12–79). Of all the patients, 26 (28%) patients were anxious, and 86% of these patients were reassured after appropriate counseling. There were 83 (89%) patients who found BoNT to be a costlier option. Education and previous Internet searches influenced positive performance in the “knowledge” domain and overall PKQ-BMD scores. The “number of injections” was also positively correlated with KAP performance.
Conclusion
This study showed that knowledge and perceptions about BoNT treatment need to be further improved. Wider availability of the Internet has provided a positive impact on patients’ and carers’ KAP. Internet-based information, higher educational qualifications of the patients, and a higher number of BoNT injection sessions are the most important predictors of satisfactory KAP related to BoNT injection treatment in patients with movement disorders.

Knowledge, Attitude, and Perceptions about Deep Brain Stimulation for Parkinson’s Disease: Observations from a Single Indian Center: Shweta Prasad, Amitabh Bhattacharya, Lulup Kumar Sahoo, Dhruv Batra, Nitish Kamble, Ravi Yadav, Dwarakanath Srinivas, Pramod Kumar Pal; J Mov Disord. 2021;14(1):60-64. Published online September 21, 2020; DOI: https://doi.org/10.14802/jmd.20066

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Objective
Willingness to undergo deep brain stimulation (DBS) among patients with Parkinson’s disease (PD) and their overall satisfaction with the procedure is highly dependent upon expectations, which are based on the core concepts of knowledge, attitude and perceptions. The present study aims to evaluate these factors in patients and caregivers with PD from a single tertiary care hospital in India.
Methods
A structured questionnaire designed to assess the knowledge, attitude and perceptions about DBS in PD was administered to 400 patients with PD and their caregivers.
Results
A very small proportion of patients and caregivers were aware of DBS. Even those who claimed to be aware of DBS were inadequately informed and had incorrect knowledge, which led to wrong attitudes and perceptions.
Conclusion
There are very significant knowledge gaps and misconceptions regarding DBS among patients with PD and caregivers. Adequate and appropriate education is necessary to clarify these misconceptions to avoid the development of unrealistic expectations and poor satisfaction.

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Assessment of Knowledge and Perception Regarding Deep Brain Stimulation Among Medical Students in Saudi Arabia
Sarah S Aldharman, Fadi A Munhish, Haila A Alabssi, Maryam A Alamer, Fay A Althunayyan, Majidah H Halawi, Shireen H Elfaham, Taghreed A Alsinani, Saud A Alnaaim
Cureus.2023;[Epub] CrossRef
Deep Brain Stimulation for Parkinson's Disease‐the Developing World's Perspective
Khushboo Patel, Divya Kalikavil Puthanveedu, Asish Vijayaraghavan, Krishnakumar Kesavapisharady, Gangadhara Sarma, Sankara P. Sarma, Syam Krishnan
Movement Disorders Clinical Practice.2023;[Epub] CrossRef
How Parkinson’s patients in the USA perceive deep brain stimulation in the 21st century: Results of a nationwide survey
Daniel Alfonso, Laura Y. Cabrera, Christos Sidiropoulos, Fei Wang, Harini Sarva
Journal of Clinical Neuroscience.2022; 95: 20. CrossRef
Caregiver Burden in Partners of Parkinsonian Patients with Deep Brain Stimulation
Eileen Gülke, Monika Pötter-Nerger
Brain Sciences.2022; 12(2): 238. CrossRef

Sialidosis Type I without a Cherry Red Spot— Is There a Genetic Basis?: Koti Neeraja, Vikram Venkappayya Holla, Shweta Prasad, Bharath Kumar Surisetti, Kempaiah Rakesh, Nitish Kamble, Ravi Yadav, Pramod Kumar Pal; J Mov Disord. 2021;14(1):65-69. Published online October 31, 2020; DOI: https://doi.org/10.14802/jmd.20083

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Sialidosis is an inborn error of metabolism due to a defect in the NEU1 gene and manifests as two phenotypes: mild type I and severe type II. The cherry red spot (CRS) is a characteristic feature in both types of sialidosis; reports of sialidosis without a CRS are rare. We report two cases of genetically confirmed sialidosis type I with a typical presentation of progressive cortical myoclonus and ataxia but without the CRS. A previously reported homozygous pathogenic variant p.Arg294Cys was detected in the first case, and a novel homozygous pathogenic variant p.Arg305Pro was detected in the second case. Additionally, we reviewed the literature describing cases with similar mutations to find a genetic basis for the absence of a CRS. Milder mutation of both alleles detected in both patients may be the reason for the absence of a CRS.

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A fuzzy rule based machine intelligence model for cherry red spot disease detection of human eyes in IoMT
Kalyan Kumar Jena, Sourav Kumar Bhoi, Debasis Mohapatra, Chittaranjan Mallick, Kshira Sagar Sahoo, Anand Nayyar
Wireless Networks.2023; 29(1): 247. CrossRef

Deep Brain Stimulation Battery Exhaustion during the COVID-19 Pandemic: Crisis within a Crisis: Vikram Venkappayya Holla, Koti Neeraja, Bharath Kumar Surisetti, Shweta Prasad, Nitish Kamble, Dwarakanath Srinivas, Ravi Yadav, Pramod Kumar Pal; J Mov Disord. 2020;13(3):218-222. Published online August 31, 2020; DOI: https://doi.org/10.14802/jmd.20073

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Abstract PDF

Objective
The novel coronavirus disease (COVID-19) pandemic and public health measures to control it have resulted in unique challenges in the management of patients with deep brain stimulation (DBS). We report our experience with the management of acute worsening of symptoms due to battery exhaustion in 3 patients with DBS.
Methods
Patients with DBS for movement disorders who visited the emergency room due to battery exhaustion during the nationwide lockdown from April to May 2020 were included.
Results
Two patients with subthalamic nucleus-DBS for Parkinson’s disease (PD) and one with globus pallidus interna-DBS for generalized dystonia presented with acute worsening of symptoms due to battery exhaustion. Urgent battery replacement was performed in both patients with PD. The patient with generalized dystonia was managed with medication adjustment as he chose to defer battery replacement.
Conclusion
DBS battery replacement can be an emergency. Decisions regarding DBS battery replacement should be individualized during this COVID-19 pandemic.

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Effects of COVID-19 on Synaptic and Neuronal Degeneration
Mohammed S. Alqahtani, Mohamed Abbas, Mohammad Y. Alshahrani, Khulud Alabdullh, Amjad Alqarni, Fawaz F. Alqahtani, Layal K. Jambi, Adnan Alkhayat
Brain Sciences.2023; 13(1): 131. CrossRef
Needs and Perceptions of Patients With Dystonia During the COVID-19 Pandemic: A Qualitative Framework Analysis of Survey Responses From Italy
Vittorio Rispoli, Matías Eduardo Díaz Crescitelli, Francesco Cavallieri, Francesca Antonelli, Stefano Meletti, Luca Ghirotto, Franco Valzania
Frontiers in Neurology.2022;[Epub] CrossRef
Parkinsonism hyperpyraexia syndrome in Parkinson's disease patients undergoing deep brain stimulation: An indirect consequence of COVID-19 lockdowns
Onanong Phokaewvarangkul, Sasivimol Virameteekul, Roongroj Bhidayasiri
Parkinsonism & Related Disorders.2021; 87: 39. CrossRef
An Investigation Into Miniaturised Closed-Loop DBS Devices
Dean M. Corva, Scott D. Adams, Kevin E. Bennet, Parastoo Hashemi, Michael Berk, Abbas Z. Kouzani
IEEE Transactions on Medical Robotics and Bionics.2021; 3(3): 671. CrossRef
Effects of COVID-19 Lockdown on Movement Disorders Patients With Deep Brain Stimulation: A Multicenter Survey
Carla Piano, Francesco Bove, Tommaso Tufo, Isabella Imbimbo, Danilo Genovese, Alessandro Stefani, Massimo Marano, Antonella Peppe, Livia Brusa, Rocco Cerroni, Francesco Motolese, Enrico Di Stasio, Marianna Mazza, Antonio Daniele, Alessandro Olivi, Paolo C
Frontiers in Neurology.2020;[Epub] CrossRef

The Non-Motor Symptom Profile of Progressive Supranuclear Palsy: Sudhakar Pushpa Chaithra, Shweta Prasad, Vikram Venkappayya Holla, Albert Stezin, Nitish Kamble, Ravi Yadav, Pramod Kumar Pal; J Mov Disord. 2020;13(2):118-126. Published online April 6, 2020; DOI: https://doi.org/10.14802/jmd.19066

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Abstract PDF

Objective
Non-motor symptoms (NMSs) significantly contribute to increased morbidity and poor quality of life in patients with parkinsonian disorders. This study aims to explore the profile of NMSs in patients with progressive supranuclear palsy (PSP) using the validated Non-Motor Symptom Scale (NMSS).
Methods
Seventy-six patients with PSP were evaluated in this study. Motor symptoms and NMSs were evaluated using the PSP Rating Scale (PSPRS), Unified Parkinson’s Disease Rating Scale-III, Montreal Cognitive Assessment, Hamilton Depression (HAMD) and Anxiety Rating Scales, Parkinson’s Disease Sleep Scale (PDSS) and NMSS. NMS severity and prevalence were also compared between patients with PSP-Richardson syndrome (PSP-RS) and those with PSP-parkinsonism.
Results
All subjects in this cohort reported at least 2 NMSs. The most prevalent NMSs in patients with PSP were in the domains of sleep/fatigue, mood/cognition, and sexual function. The least prevalent NMSs were in the domains of cardiovascular including falls, and perceptual problems/hallucinations. Significant correlations were observed between the NMSS scores and HAM-D, PDSS, PSPRS scores and PSPRS sub-scores. The severity of NMSs was unrelated to the duration of illness. Patients with PSP-RS reported a higher severity of drooling, altered smell/taste, depression and altered interest in sex and a higher prevalence of sexual dysfunction.
Conclusion
NMSs are commonly observed in patients with PSP, and the domains of sleep, mood and sexual function are most commonly affected. These symptoms contribute significantly to disease morbidity, and clinicians should pay adequate attention to identifying and addressing these symptoms.

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Francesca Baschieri, Maria Vitiello, Pietro Cortelli, Giovanna Calandra-Buonaura, Francesca Morgante
Journal of Neurology.2023; 270(1): 109. CrossRef
PDQ-8: A Simplified and Effective Tool Measuring Life Quality in Progressive Supranuclear Palsy
Xin-Yi Li, Ming-Jia Chen, Xiao-Niu Liang, Rui-Xin Yao, Bo Shen, Bin Wu, Gen Li, Yi-Min Sun, Jian-Jun Wu, Feng-Tao Liu, Yu-Jie Yang, Jian Wang
Journal of Parkinson's Disease.2023; 13(1): 83. CrossRef
Non-motor symptoms in multiple system atrophy: A comparative study with Parkinson's disease and progressive supranuclear palsy
Wen-Zheng Hu, Ling-Xiao Cao, Jin-Hui Yin, Xue-Song Zhao, Ying-Shan Piao, Wei-Hong Gu, Jing-Hong Ma, Zhi-Rong Wan, Yue Huang
Frontiers in Neurology.2023;[Epub] CrossRef
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Noreen O’Shea, Shane Lyons, Stephen Higgins, Sean O’Dowd
Journal of Neurology.2023; 270(4): 2333. CrossRef
Structural correlates of survival in progressive supranuclear palsy
Duncan Street, W Richard Bevan-Jones, Maura Malpetti, P Simon Jones, Luca Passamonti, Boyd CP. Ghosh, Timothy Rittman, Ian TS. Coyle-Gilchrist, Kieren Allinson, Catherine E. Dawson, James B. Rowe
Parkinsonism & Related Disorders.2023; 116: 105866. CrossRef
Migraine and Tension-type Headache in Parkinson’s Disease and Progressive Supranuclear Palsy/Corticobasal Syndrome
Vinayak Jatale, Ashutosh Tiwari, Mritunjai Kumar, Ravi Gupta, Niraj Kumar
Annals of Indian Academy of Neurology.2023; 26(5): 708. CrossRef
A Systematic Review of Apathy and Depression in Progressive Supranuclear Palsy
Joshua Flavell, Peter J. Nestor
Journal of Geriatric Psychiatry and Neurology.2022; 35(3): 280. CrossRef
The Burden of Progressive Supranuclear Palsy on Patients, Caregivers, and Healthcare Systems by PSP Phenotype: A Cross-Sectional Study
Demetris Pillas, Alexander Klein, Teresa Gasalla, Andreja Avbersek, Alexander Thompson, Jack Wright, Jennifer Mellor, Anna Scowcroft
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Psychogenic movement disorders (PMD) are a group of disorders which are in the border zone between neurology and psychiatry. All necessary laboratory investigations should be done to rule out an underlying organic disorder. While clinical acumen of a trained movement disorder specialist may be sufficient to diagnose most PMD, there are clinical situations where electrophysiological tests are required either to rule out an organic movement disorder or even diagnose a PMD. Current electrophysiological test are most useful for tremor, followed by jerks and least for spasms or dystonia. Commonly used electrophysiologic tests include multichannel surface electromyography (EMG), accelerometry, electroencephalography time locked with EMG, premovement potential (Bereitschaftspotential), and somatosensory evoked potentials. Psychogenic tremor is a low frequency tremor with variable frequency and duration of EMG bursts, entrainable, has a high coherence with voluntary movements, and presence of coactivation sign. Patients with psychogenic jerks have well organized triphasic pattern of activation of agonist and antagonist muscles. The jerks are associated with EMG bursts of long duration (usually > 70 ms), long and variable latencies in stimulus induced jerks, absence of craniocaudal pattern of muscle recruitment in apparent startle response, and often a Breitschaftspotential (premovement potential) precedes the jerk. Electrophysiological characterization of psychogenic dystonia is difficult and the tests are usually performed to rule out organic dystonia with characteristic findings. Finally, caution should be exerted in interpreting the electrophysiological tests as both false positive and false negative diagnosis of PMD may still occur.

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