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Yoo SW, Jung H, Park J, Kim JH, Lee KS, Kim JS. Unilateral Myoclonus as an initial manifestation in Moyamoya disease with asymmetric vasculature. Clin Neurol Neurosurg 2023; 225:107587. [PMID: 36634569 DOI: 10.1016/j.clineuro.2023.107587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 12/05/2022] [Accepted: 01/07/2023] [Indexed: 01/09/2023]
Abstract
Movement disorders have been identified as a rare early manifestation of the Moyamoya disease. Herein, we present a case of a 34-year-old man with a genetically confirmed Moyamoya disease who showed unilateral myoclonus as an initial manifestation. Neuroimaging studies showed prominent asymmetrically developed Moyamoya disease on the right hemisphere with near-complete loss of normal vessels while the left hemisphere was adjunctively fed with extension of posterior cerebral artery: uneven progression of vasculature. 99mTc-hexamethylpropylene amine oxime single-photon emission computed tomography demonstrated impaired vascular reserve. Electroencephalography showed occasional sharp waves on right temporal area. The phenomenon of this patient could be explained in the context of excitable cortex and hypoactive subcortical substrate that might imply putative contradictory neurobiology in Moyamoya disease.
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Affiliation(s)
- Sang-Won Yoo
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Heuiseop Jung
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jeonghyun Park
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jean Hee Kim
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Kwan Sung Lee
- Department of Neurosurgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Joong-Seok Kim
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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2
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Garg D, Mohammad S, Shukla A, Sharma S. Genetic Links to Episodic Movement Disorders: Current Insights. Appl Clin Genet 2023; 16:11-30. [PMID: 36883047 PMCID: PMC9985884 DOI: 10.2147/tacg.s363485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 02/24/2023] [Indexed: 03/05/2023] Open
Abstract
Episodic or paroxysmal movement disorders (PxMD) are conditions, which occur episodically, are transient, usually have normal interictal periods, and are characterized by hyperkinetic disorders, including ataxia, chorea, dystonia, and ballism. Broadly, these comprise paroxysmal dyskinesias (paroxysmal kinesigenic and non-kinesigenic dyskinesia [PKD/PNKD], paroxysmal exercise-induced dyskinesias [PED]) and episodic ataxias (EA) types 1-9. Classification of paroxysmal dyskinesias has traditionally been clinical. However, with advancement in genetics and the discovery of the molecular basis of several of these disorders, it is becoming clear that phenotypic pleiotropy exists, that is, the same variant may give rise to a variety of phenotypes, and the classical understanding of these disorders requires a new paradigm. Based on molecular pathogenesis, paroxysmal disorders are now categorized as synaptopathies, transportopathies, channelopathies, second-messenger related disorders, mitochondrial or others. A genetic paradigm also has an advantage of identifying potentially treatable disorders, such as glucose transporter 1 deficiency syndromes, which necessitates a ketogenic diet, and ADCY5-related disorders, which may respond to caffeine. Clues for a primary etiology include age at onset below 18 years, presence of family history and fixed triggers and attack duration. Paroxysmal movement disorder is a network disorder, with both the basal ganglia and the cerebellum implicated in pathogenesis. Abnormalities in the striatal cAMP turnover pathway may also be contributory. Although next-generation sequencing has restructured the approach to paroxysmal movement disorders, the genetic underpinnings of several entities remain undiscovered. As more genes and variants continue to be reported, these will lead to enhanced understanding of pathophysiological mechanisms and precise treatment.
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Affiliation(s)
- Divyani Garg
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
| | - Shekeeb Mohammad
- Kids Neuroscience Centre, The Children's Hospital at Westmead, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia.,TY Nelson Department of Neurology and Neurosurgery, The Children's Hospital at Westmead, The University of Sydney, Westmead, New South Wales, Australia
| | - Anju Shukla
- Department of Medical Genetics, Kasturba Medical College and Hospital, Manipal, India
| | - Suvasini Sharma
- Department of Pediatrics (Neurology Division), Lady Hardinge Medical College and Kalawati Saran Hospital, New Delhi, India
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3
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Narasimhan M, Schwartz R, Halliday G. Parkinsonism and cerebrovascular disease. J Neurol Sci 2021; 433:120011. [PMID: 34686356 DOI: 10.1016/j.jns.2021.120011] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/01/2021] [Accepted: 09/29/2021] [Indexed: 11/27/2022]
Abstract
The relationship between cerebrovascular disease and parkinsonism is commonly seen in everyday clinical practice but remains ill-defined and under-recognised with little guidance for the practising neurologist. We attempt to define this association and to illustrate key clinical, radiological and pathological features of the syndrome of Vascular Parkinsonism (VaP). VaP is a major cause of morbidity in the elderly associated with falls, hip fractures and cognitive impairment. Although acute parkinsonism is reported in the context of an acute cerebrovascular event, the vast majority of VaP presents as an insidious syndrome usually in the context of vascular risk factors and radiological evidence of small vessel disease. There may be an anatomic impact on basal ganglia neuronal networks, however the effect of small vessel disease (SVD) on these pathways is not clear. There are now established reporting standards for radiological features of SVD on MRI. White matter hyperintensities and lacunes have been thought to be the representative radiological features of SVD but other features such as the perivascular space are gaining more importance, especially in context of the glymphatic system. It is important to consider VaP in the differential diagnosis of Parkinson disease (PD) and in these situations, neuroimaging may offer diagnostic benefit especially in those patients with atypical presentations or refractoriness to levodopa. Proactive management of vascular risk factors, monitoring of bone density and an exercise program may offer easily attainable therapeutic targets in PD and VaP. Levodopa therapy should be considered in patients with VaP, however the dose and effect may be different from use in PD. This article is part of the Special Issue "Parkinsonism across the spectrum of movement disorders and beyond" edited by Joseph Jankovic, Daniel D. Truong and Matteo Bologna.
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Affiliation(s)
- Manisha Narasimhan
- Brain and Mind Centre and Faculty of Health and Medical Sciences, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia.
| | - Raymond Schwartz
- Brain and Mind Centre and Faculty of Health and Medical Sciences, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia
| | - Glenda Halliday
- Brain and Mind Centre and Faculty of Health and Medical Sciences, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia
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4
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Xian WB, Zhang XS, Shi XC, Luo GH, Yi C, Pei Z. Corticostriatal Hypermetabolism in Moyamoya Disease-Induced Hemichorea: Two Case Reports and a Literature Review. Front Neurol 2021; 12:649014. [PMID: 34248815 PMCID: PMC8266195 DOI: 10.3389/fneur.2021.649014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 05/26/2021] [Indexed: 12/03/2022] Open
Abstract
Moyamoya disease (MMD) is a rare cause of chorea, and its pathophysiological mechanism remains unclear. We explore the use of cerebral positron emission tomography (PET) to study brain functional connectivity in 2 patients with MMD-induced hemichorea. Abnormal metabolism of brain was analyzed by 18F-fluorodeoxyglucose (18F-FDG) PET images. Dopamine transporters (DAT) PET evaluated the integrity of the cerebral dopamine system. A comprehensive systemic literature search of the PubMed database was also conducted. The 18F-FDG imaging of our patients showed no responsible hypometabolism in affected brain areas, while hypermetabolism in the affected caudate nucleus, putamen and fronto-parietal areas could be seen. DAT PET imaging was normal in patient 1 (a 23-year-old woman), while remarkably reduced DAT binding was seen in the left striatum of patient 2 (a 48-year-old woman). The literature review of 9 publications revealed that 11 patients who underwent single photon emission computed tomography (SPECT) showed cerebral hypoperfusion in the cortex and subcortical area; 18F-FDG PET was performed in 3 cases, which revealed hypermetabolism in the affected striatum in 2 cases. These findings suggest that the striatal and cortical hypermetabolism in the first patient result from underactivity in indirect pathway from basal ganglia-thalamocortical circuits, causing increased activity of excitatory glutamatergic thalamostriatal and thalamocortical projection neurons. The collateral vessels in the basal ganglia might lead to disruption of normal basal ganglia signaling. A dominant left hemisphere with corpus callosal connections to the right basal ganglia resulting into left hemichorea is the most probable explanation for the second patient. We have identified abnormal functional connectivity in basal ganglia-thalamocortical circuits in patients with MMD-induced chorea highlighting the corticostriatal pathway plays an important role in the pathogenesis of MMD-induced chorea.
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Affiliation(s)
- Wen-Biao Xian
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou, China
| | - Xiang-Song Zhang
- Department of Nuclear Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xin-Chong Shi
- Department of Nuclear Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Gan-Hua Luo
- Department of Nuclear Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Chang Yi
- Department of Nuclear Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhong Pei
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou, China
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5
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Enríquez-Ruano P, Navarro CE, Penagos N, Espitia OM. Late-onset chorea after cerebral revascularization as a clinical manifestation of moyamoya disease. Neurol Sci 2021; 42:3027-3030. [PMID: 33751259 DOI: 10.1007/s10072-021-05189-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 03/15/2021] [Indexed: 10/21/2022]
Affiliation(s)
- Pilar Enríquez-Ruano
- Unit of Clinical Neurology, Department of Medicine, School of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia.,Grupo de Investigación en Neurología de la Universidad Nacional de Colombia - NeuroUnal, Bogotá, Colombia
| | - Cristian Eduardo Navarro
- Unit of Clinical Neurology, Department of Medicine, School of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia. .,Grupo de Investigación en Neurología de la Universidad Nacional de Colombia - NeuroUnal, Bogotá, Colombia. .,Grupo Medicina Comunitaria y Salud Colectiva, Universidad El Bosque, Bogotá, Colombia.
| | - Natalia Penagos
- Pediatric Neurology Unit, Fundación Hospital Pediátrico La Misericordia - HOMI, Bogotá, Colombia
| | - Oscar Mauricio Espitia
- Pediatric Neurology Unit, Fundación Hospital Pediátrico La Misericordia - HOMI, Bogotá, Colombia.,Pediatrics Residency Program, School of Medicine, Universidad del Rosario, Bogotá, Colombia
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6
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Scott RM, Smith ER. Transition to Adulthood for Pediatric Moyamoya Patients. JOURNAL OF PEDIATRIC NEUROLOGY 2020. [DOI: 10.1055/s-0040-1715500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractMoyamoya is a progressive arteriopathy of the intracranial vasculature, predominantly affecting the terminal branches of the internal carotid artery. Treatment is predicated on surgical revascularization to reduce the risk of stroke. For patients diagnosed and treated as children, it is important to recognize the long-term implications of the disease, for example, that moyamoya is treatable, but not curable. Pediatric moyamoya patients face unique challenges as they transition to adulthood as a consequence of the chronic nature of this disorder. Successful long-term care requires a strategy that incorporates ongoing longitudinal disease monitoring, coordination of care between physician teams, and anticipation of socioeconomic factors that change over time. This article provides an approach to transition care to adult caregivers for pediatric moyamoya patients with a specific focus on the three key stakeholders in the process: the neurosurgeon, the primary care physician, and the individual patient.
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Affiliation(s)
- R Michael Scott
- Department of Neurosurgery, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Edward R. Smith
- Department of Neurosurgery, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, United States
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Xu J, Li S, Rajah GB, Zhao W, Ren C, Ding Y, Zhang Q, Ji X. Asymmetric lenticulostriate arteries in patients with moyamoya disease presenting with movement disorder: three new cases. Neurol Res 2020; 42:665-669. [PMID: 32586217 DOI: 10.1080/01616412.2020.1782121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
OBJECTIVE Unilateral movement disorder associated with moyamoya disease is a rare finding and the mechanism remains to be fully elucidated. Theories postulated include contralateral cerebral ischemic or hemorrhagic lesions, and/or hypoperfusion. However, few studies have reported such patients without contralateral lesions nor hypoperfusion. This study aimed to explore the potential mechanism of those who had neither contralateral cerebral lesions nor hypoperfusion. METHODS Neuroradiological features of lenticulostriate arteries in three cases with unilateral movement disorder associated with moyamoya disease who had neither contralateral lesions nor hypoperfusion were mainly analyzed. RESULTS Angiography and 3 T black-blood T1-weighted intracranial vessel wall imaging both demonstrated a significant asymmetry between bilateral lenticulostriate arteries qualitatively and quantitatively on admission. After one-year follow-up, two patients' vessel wall imaging indicated that the asymmetry diminished, and the symptoms spontaneously resolved. CONCLUSION This report demonstrated that patients with moyamoya disease with unilateral movement disorder who had neither contralateral lesions nor hypoperfusion may be related to the asymmetry between bilateral lenticulostriate arteries through basal ganglia.
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Affiliation(s)
- Jiali Xu
- Department of Neurology, Xuanwu Hospital, Capital Medical University , Beijing, China
| | - Sijie Li
- Beijing Key Laboratory of Hypoxic Conditioning Translational Medicine, Xuanwu Hospital, Capital Medical University , Beijing, China
| | - Gary B Rajah
- Department of Neurosurgery, Wayne State University , Detroit, MI, USA
| | - Wenbo Zhao
- Department of Neurology, Xuanwu Hospital, Capital Medical University , Beijing, China
| | - Changhong Ren
- Beijing Key Laboratory of Hypoxic Conditioning Translational Medicine, Xuanwu Hospital, Capital Medical University , Beijing, China
| | - Yuchuan Ding
- Department of Neurosurgery, Wayne State University , Detroit, MI, USA
| | - Qian Zhang
- Department of Neurology, Xuanwu Hospital, Capital Medical University , Beijing, China
| | - Xunming Ji
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University , Beijing, China
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8
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Termsarasab P, Thammongkolchai T, Frucht SJ. Medical treatment of dystonia. JOURNAL OF CLINICAL MOVEMENT DISORDERS 2016; 3:19. [PMID: 28031858 PMCID: PMC5168853 DOI: 10.1186/s40734-016-0047-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 11/08/2016] [Indexed: 11/25/2022]
Abstract
Therapeutic strategies in dystonia have evolved considerably in the past few decades. Three major treatment modalities include oral medications, botulinum toxin injections and surgical therapies, particularly deep brain stimulation. Although there has been a tremendous interest in the later two modalities, there are relatively few recent reviews of oral treatment. We review the medical treatment of dystonia, focusing on three major neurotransmitter systems: cholinergic, GABAergic and dopaminergic. We also provide a practical guide to medication selection, therapeutic strategy and unmet needs.
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Affiliation(s)
- Pichet Termsarasab
- Movement Disorder Division, Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, USA
| | | | - Steven J. Frucht
- Movement Disorder Division, Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, USA
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9
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Movement symptoms in European Moyamoya angiopathy - First systematic questionnaire study. Clin Neurol Neurosurg 2016; 152:52-56. [PMID: 27898361 DOI: 10.1016/j.clineuro.2016.11.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 11/19/2016] [Accepted: 11/22/2016] [Indexed: 11/24/2022]
Abstract
OBJECTIVE Movement disorders are a rare manifestation of Moyamoya angiopathy (MMA). Data on prevalence and clinical presentation are warranted. Possible involuntary movements include focal motor seizures, tremor, limb-shaking transient ischemic attacks, choreiform and spastic or dystonic movement disorders. PATIENTS AND METHODS We developed a questionnaire to systematically assess movement disorders in MMA. Patients' history of involuntary movements and their clinical presentation were assessed systematically by interview. Additionally, demographic data were assessed as well as localization of movements, possible trigger factors and the presence of other symptoms. RESULTS The questionnaire was administered to 63 European patients with MMA. The response rate was high with 93.6% participating patients. Twenty-eight patients (47.4%) reported involuntary movement disorders including periodic tremor, irregular jerks, involuntary movements with loopy or pranced character, stiffness and muscle cramps. From those patients, 16 (57.1%) individuals had the symptoms prior to the diagnosis of MMA. The most common involuntary movements were irregular jerks witnessed by 17 (60.7%) patients, followed by stiffness and muscle cramps in 10 (35.7%). Eight (28.6%) Patients suffered from unintended loopy and pranced character, while 4 individuals (14.3%) remembered periodic tremor. Of the 28 patients who witnessed movement disorders, 23 had undergone revascularization surgery (82.1%). From the latter subgroup, movement disorders were reversed in 7 out of 12 patients (58.3%) with irregular jerks and 4 out of 7 patients (57.1%) with unintended loopy and pranced character. CONCLUSIONS Our study elucidates the high incidence of movement disorders in an unselected consecutively recruited cohort of European MMA patients.
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10
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Littleton ET, Glover N, Tiwari A. Recurrent amaurosis fugax and hemichorea: limb-shaking TIA. Pract Neurol 2015; 15:218-20. [PMID: 25617405 DOI: 10.1136/practneurol-2014-000961] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/03/2015] [Indexed: 11/04/2022]
Affiliation(s)
- Edward T Littleton
- Department of Neurology, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, UK
| | - Nicholas Glover
- Department of Ophthalmology, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, UK
| | - Alok Tiwari
- Department of Vascular Surgery, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, UK
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11
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Erro R, Stamelou M, Ganos C, Skorvanek M, Han V, Batla A, Bhatia KP. The Clinical Syndrome of Paroxysmal Exercise-Induced Dystonia: Diagnostic Outcomes and an Algorithm. Mov Disord Clin Pract 2014; 1:57-61. [PMID: 30363868 DOI: 10.1002/mdc3.12007] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Revised: 02/01/2014] [Accepted: 02/06/2014] [Indexed: 11/09/2022] Open
Abstract
Paroxysmal exercise-induced dyskinesia (PED) is characterized by recurrent episodes of involuntary movement disorders usually precipitated by sustained walking or running. Recently, mutations in the gene encoding for glucose transporter type 1 (GLUT-1) were described in a number of families with autosomal dominant PED. However, the underlying etiology of PED is quite heterogeneous. We describe a large series of patients presenting with PED. Of 16 patients, we reached a conclusive diagnosis for 11 (4 patients with GLUT-1 mutations, 4 patients with early Parkinson's disease, 2 with dopa-responsive dystonia, and one with a psychogenic/functional movement disorder). For the remaining 5 patients, the final diagnosis remained descriptive. Although certain clinical features might allow etiological distinction between cases, clinical examination alone is not always conclusive. Based on our series, we propose a diagnostic algorithm to aid the differential diagnosis of PED.
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Affiliation(s)
- Roberto Erro
- Sobell Department of Motor Neuroscience and Movement Disorders University College London (UCL) Institute of Neurology London United Kingdom.,Dipartimento di Scienze Neurologiche e del Movimento Università di Verona, Policlinico Borgo Roma Verona Italy
| | - Maria Stamelou
- Sobell Department of Motor Neuroscience and Movement Disorders University College London (UCL) Institute of Neurology London United Kingdom.,Second Department of Neurology Kapodistrian University of Athens Athens Greece.,Neurology Clinic Philipps University Marburg Germany
| | - Christos Ganos
- Sobell Department of Motor Neuroscience and Movement Disorders University College London (UCL) Institute of Neurology London United Kingdom.,Neurology University Medical Center Hamburg-Eppendorf (UKE) Hamburg Germany.,Department of Pediatric and Adult Movement Disorders and Neuropsychiatry Institute of Neurogenetics University of Lübeck Lübeck Germany
| | - Matej Skorvanek
- Department of Neurology Safarik University Kosice Slovakia.,Louis Pasteur University Hospital Kosice Slovakia
| | - Vladimir Han
- Department of Neurology Safarik University Kosice Slovakia.,Louis Pasteur University Hospital Kosice Slovakia
| | - Amit Batla
- Sobell Department of Motor Neuroscience and Movement Disorders University College London (UCL) Institute of Neurology London United Kingdom
| | - Kailash P Bhatia
- Sobell Department of Motor Neuroscience and Movement Disorders University College London (UCL) Institute of Neurology London United Kingdom
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Abstract
Paroxysmal dyskinesias are a rare group of movement disorders affecting both adults and children. Based on the events that precipitate the abnormal movements, they are subdivided into paroxysmal kinesigenic dyskinesia (PKD), precipitated by sudden voluntary movements; paroxysmal nonkinesigenic dyskinesia (PNKD), which occurs at rest; paroxysmal exertion-induced dyskinesia (PED), occurring after prolonged exercise; and paroxysmal hypnogenic dyskinesia (PHD), which occurs in sleep. Paroxysmal dyskinesias can be sporadic, familial (autosomal dominant inheritance), or secondary to other disorders. Recent genetic discoveries may aid us in elucidating the pathophysiology of these disorders. PKD has been linked to the pericentromeric region of chromosome 16, PNKD is associated with mutations in the myofibrillogenesis regulator 1 (MR-1) gene on the long arm of chromosome 2 (2q32-36 locus), and PED is associated with mutations in the glucose transporter gene, GLUT1, responsible for glucose transport across the blood-brain barrier. Lifestyle modification to avoid precipitating factors is important in the management of paroxysmal dyskinesias. Medical therapies have not been examined in controlled trials. Nevertheless, anticonvulsants have been found to be extremely effective in treating PKD and are sometimes useful in other types, suggesting that these disorders may indeed represent forms of channelopathies. Drugs such as acetazolamide, anticholinergics, levodopa, and tetrabenazine have been inconsistently successful. In rare cases with medically refractory symptoms, deep brain stimulation has also been employed. Development of successful treatments for the different paroxysmal dyskinesias rests on elucidating the pathophysiology and targeting therapy to treat the underlying perturbation.
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Affiliation(s)
- Shyamal H Mehta
- Shyamal H. Mehta, MD, PhD Movement Disorders Program, Department of Neurology, 1429 Harper Street, HF-1121, Augusta, GA 30912, USA.
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13
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Abstract
Paroxysmal choreodystonic disorders or paroxysmal dyskinesias are a heterogeneous group of movement disorders characterized by recurrent attacks of abnormal involuntary movements. They are classified into four categories according to the precipitant, duration of attacks, and etiology: (1) paroxysmal kinesigenic dyskinesia (PKD), in which attacks are brief and induced by sudden voluntary movements; (2) paroxysmal nonkinesigenic dyskinesia (PNKD), in which attacks occur spontaneously; (3) paroxysmal exertion-induced dyskinesia (PED), in which attacks are brought on by prolonged exercise; and (4) paroxysmal hypnogenic dyskinesia (PHD), in which attacks occur during sleep. Among them, PHD is currently known to be a form of mesial frontal-lobe epilepsy, and has been given the term "autosomal-dominant nocturnal frontal lobe epilepsy" (ANDFLE) in some familiar cases with an autosomal-dominant inheritance. The clinical, etiological and pathophysiological features of PKD, PNKD, and PED are reviewed.
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Affiliation(s)
- Young H Sohn
- Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea.
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14
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Abstract
Hemiballism is a relatively rare hyperkinetic movement disorder characterized by involuntary, violent, coarse and wide-amplitude movements involving ipsilateral arm and leg. Although classically related to lesions in the subthalamic nucleus, in clinical-radiological series of hemiballism most patients had lesions outside this nucleus, involving mainly other basal ganglia structures. It has been suggested that abnormal neuronal firing patterns in the internal segment of the globus pallidus may be related to the pathogenesis of hemiballism. Stroke is the most common cause, but in recent years an increasing number of patients with hemiballism associated with nonketotic hyperglycemia or with complications of human immunodeficiency virus (HIV) infection have been reported. Contrarily to what was stated in older literature, hemiballism has, in general, a relatively good prognosis. Depending on the underlying causes, many patients may experience spontaneous improvements or remissions. Treatment should be directed to the cause of hemiballism. Symptomatic treatment includes the use of drugs, particularly blockers of striatal D2 dopamine receptors and tetrabenazine. Surgical treatment, especially pallidotomy, is a therapeutic option for the minority of patients with severe persistent disabling hemiballism.
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Affiliation(s)
- Francisco Grandas
- Department of Neurology, Hospital Universitario Gregorio Marañón and Parkinson's Disease and Movement Disorders Unit, Hospital Beata Maria Ana, Madrid, Spain.
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15
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Baik JS, Lee MS. Movement disorders associated with moyamoya disease: a report of 4 new cases and a review of literatures. Mov Disord 2010; 25:1482-6. [PMID: 20629162 DOI: 10.1002/mds.23130] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The aim of this study was to define the clinical characteristics of patients who developed movement disorders in association with moyamoya disease (MMD). Using PubMed and medical records of our hospital from 1985 to 2008, we searched for patients who developed movement disorders in association with MMD. This study included 38 patients described in previous studies and 4 patients found in the medical records. The onset of movement disorders was thought to be sudden. In 13 patients, the movement disorders were precipitated by hyperventilation or emotional stress. Twenty-seven of the 42 patients developed chorea, 4 patients developed dystonia, and 4 developed a mixture of both. The movement disorders of the remaining 7 patients were described as dyskinesia. A third of the 42 patients developed bilateral movement disorders, and their mean age was younger than that of those with unilateral movement disorders. In 37 of the 42 patients, brain imaging studies showed ischemic lesions, but the remaining 5 patients showed no parenchymal lesions. Cerebral perfusion studies showed hypoperfusion in the basal ganglia and in the cerebral cortical areas. Most patients improved whether they were treated or not. MMD must be included in the differential diagnosis of the sudden onset of dyskinesias, particularly chorea and focal dystonia. Even in patients with no parenchymal lesion in brain imaging studies, cerebral angiography and cerebral blood perfusion studies must be performed, if they develop a sudden onset or recurrent movement disorders preceded by emotional stress or hyperventilation.
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Affiliation(s)
- Jong Sam Baik
- Department of Neurology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea
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Abstract
A seven year-old male presented to his pediatrician with choreiform movements and a recent history of sore throat. He was diagnosed with Sydenham's chorea based on clinical criteria and laboratory evidence. Worsening symptoms prompted a magnetic resonance imaging (MRI) of the brain which demonstrated evidence of Moyamoya disease. Sydenham's chorea is a common and well-documented complication of post-streptococcal infection, but has not been previously reported in association with Moyamoya disease. This case raises the quandary of causality of chorea in this patient and the need for neuroimaging in children with movement disorders.
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Park SY, Kim HJ, Cho YJ, Cho JY, Hong KS. Recurrent hemichorea following a single infarction in the contralateral subthalamic nucleus. Mov Disord 2009; 24:617-8. [PMID: 19133654 DOI: 10.1002/mds.22423] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Schmeisser MJ, Unrath A, Otto M, Tumani H, Abler B. Moyamoya disease precipitating Sydenham's chorea in a 19-year-old Caucasian woman. Mov Disord 2009; 24:1401-3. [DOI: 10.1002/mds.22548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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