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orthostatic tremor

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https://www.readbyqxmd.com/read/29767354/proprioceptive-muscle-tendon-stimulation-reduces-symptoms-in-primary-orthostatic-tremor
#1
M Wuehr, C Schlick, K Möhwald, R Schniepp
INTRODUCTION: Primary orthostatic tremor (OT) is characterized by high-frequency lower limb muscle contractions and a disabling sense of unsteadiness while standing. To date, therapeutic options for OT are limited. Here, we examined the effects of proprioceptive leg muscle stimulation via muscle tendon vibration (MTV) on tremor and balance control in patients with primary OT. METHODS: Tremor in nine patients with primary OT was examined during four conditions: standing (1), standing with MTV on the bilateral soleus muscles (2), lying (3), and lying with MTV (4)...
May 16, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29750732/the-patchy-tremor-landscape-recent-advances-in-pathophysiology
#2
Freek Nieuwhof, Pattamon Panyakaew, Bart P van de Warrenburg, Cecile Gallea, Rick C Helmich
PURPOSE OF REVIEW: We focus on new insights in the pathophysiology of Parkinson's disease tremor, essential tremor, tremor in dystonia, and orthostatic tremor. RECENT FINDINGS: Neuroimaging findings suggest that Parkinson's disease resting tremor is associated with dopaminergic dysfunction, serotonergic dysfunction, or both. Not all tremors in Parkinson's disease have the same pathophysiology: postural tremor in Parkinson's disease can be subdivided into pure postural tremor, which involves nondopaminergic mechanisms, and re-emergent tremor, which has a dopaminergic basis...
May 9, 2018: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29686940/complete-resolution-of-symptoms-of-primary-orthostatic-tremor-with-perampanel
#3
María Ruiz-Julián, Jorge Luís Orozco, Alexandre Gironell
Background: Primary orthostatic tremor (POT) is an infrequent disorder whose physiopathology is unknown. Current medication is largely ineffective or only offers mild benefits. Case Report: A 75-year-old female with refractory POT treated with 4 mg/day of perampanel achieved complete symptom resolution. Owing to adverse effects, the patient reduced intake to 2 mg/day, but even at this lower dose the benefit was maintained. Discussion: We report the complete resolution of POT symptoms using low doses of perampanel, an antiepileptic drug that blocks glutamate-mediated post-synaptic excitation...
2018: Tremor and Other Hyperkinetic Movements
https://www.readbyqxmd.com/read/29511865/deep-brain-stimulation-in-uncommon-tremor-disorders-indications-targets-and-programming
#4
REVIEW
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
BACKGROUND: In uncommon tremor disorders, clinical efficacy and optimal anatomical targets for deep brain stimulation (DBS) remain inadequately studied and insufficiently quantified. METHODS: We performed a systematic review of PubMed.gov and ClinicalTrials.gov. Relevant articles were identified using the following keywords: "tremor", "Holmes tremor", "orthostatic tremor", "multiple sclerosis", "multiple sclerosis tremor", "neuropathy", "neuropathic tremor", "fragile X-associated tremor/ataxia syndrome", and "fragile X...
March 6, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29503326/tremor-syndromes-a-review
#5
REVIEW
Nitish Kamble, Pramod Kumar Pal
Among the involuntary movement disorders, tremor is a common phenomenology seen in clinical practice. The important factors that need to be determined while assessing a patient with tremor include the phenomenology of tremor, presence or absence of other neurologic signs, and the effect of medications or alcohol. Tremor can broadly be classified based on the circumstances under which it occurs, i.e., rest or action. The basal ganglia-cerebello-thalamic and dentate-olivary circuits are involved in the generation of tremor...
March 2018: Neurology India
https://www.readbyqxmd.com/read/29404646/-pathophysiology-of-tremor
#6
REVIEW
M Muthuraman, A Schnitzler, S Groppa
Tremor is clinically defined as a rhythmic, oscillating movement of parts of the body, which functionally leads to impairment of the coordination and execution of targeted movements. It can be a symptom of a primary disease, such as resting tremor in Parkinson's disease or occur as an independent disease, such as essential or orthostatic tremor. For the development of tremor, cerebral components as well as mechanisms at the spinal and muscular level play an important role. This review presents the results of new imaging and electrophysiological studies that have led to important advances in our understanding of the pathophysiology of tremor...
April 2018: Der Nervenarzt
https://www.readbyqxmd.com/read/29399336/cardiovascular-characteristics-of-chronic-fatigue-syndrome
#7
Sara Bozzini, Andrea Albergati, Enrica Capelli, Lorenzo Lorusso, Carmine Gazzaruso, Gabriele Pelissero, Colomba Falcone
Patients with chronic fatigue syndrome (CFS) commonly exhibit orthostatic intolerance. Abnormal sympathetic predominance in the autonomic cardiovascular response to gravitational stimuli was previously described in numerous studies. The aim of the current study was to describe cardiological and clinical characteristics of Italian patients with CFS. All of the patients were of Caucasian ethnicity and had been referred to our center, the Cardiology Department of the University Hospital of Pavia (Pavia, Italy) with suspected CFS...
January 2018: Biomedical Reports
https://www.readbyqxmd.com/read/29391028/improvement-of-severe-myalgic-encephalomyelitis-chronic-fatigue-syndrome-symptoms-following-surgical-treatment-of-cervical-spinal-stenosis
#8
Peter C Rowe, Colleen L Marden, Scott Heinlein, Charles C Edwards
BACKGROUND: Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a potentially disabling disorder. Little is known about the contributors to severe forms of the illness. We describe three consecutive patients with severe ME/CFS whose symptoms improved after recognition and surgical management of their cervical spinal stenosis. METHODS: All patients satisfied clinical criteria for ME/CFS and orthostatic intolerance, and were later found to have cervical spinal stenosis...
February 2, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29327098/-rare-tremor-syndromes
#9
REVIEW
J S Becktepe, F Goevert, G Deuschl
BACKGROUND: There is a group of uncommon sporadic tremor syndromes, which are only partially taken into account in the current classification of tremor. Their knowledge is of diagnostic and therapeutic relevance and they should be considered in the differential diagnosis of frequent tremor syndromes. OBJECTIVE: Differential diagnostics and treatment of uncommon tremor syndromes. METHOD: Literature search (PubMed, Google Scholar). RESULTS: Holmes tremor, myorhythmia, palatal tremor, limb-shaking transient ischemic attack (TIA), tardive tremor, neuropathic tremor, tremor induced by peripheral trauma and orthostatic tremor syndrome are described...
April 2018: Der Nervenarzt
https://www.readbyqxmd.com/read/29204315/pathogenesis-of-primary-orthostatic-tremor-current-concepts-and-controversies
#10
REVIEW
Abhishek Lenka, Pramod Kumar Pal, Danish Ejaz Bhatti, Elan D Louis
Background: Orthostatic tremor (OT), a rare and complex movement disorder, is characterized by rapid tremor of both legs and the trunk while standing. These disappear while the patient is either lying down or walking. OT may be idiopathic/primary or it may coexist with several neurological conditions (secondary OT/OT plus). Primary OT remains an enigmatic movement disorder and its pathogenesis and neural correlates are not fully understood. Methods: A PubMed search was conducted in July 2017 to identify articles for this review...
2017: Tremor and Other Hyperkinetic Movements
https://www.readbyqxmd.com/read/29169787/comprehensive-blinded-assessment-of-balance-in-orthostatic-tremor
#11
Danish Bhatti, Rebecca Thompson, Yiwen Xia, Amy Hellman, Lorene Schmaderer, Katie Suing, Jennifer McKune, Cynthia Penke, Regan Iske, Bobbi Jo Roeder, Ka-Chun Siu, John M Bertoni, Diego Torres-Russotto
INTRODUCTION: Orthostatic Tremor (OT) is a movement disorder characterized by a sensation of unsteadiness and tremors in the 13-18 Hz range present upon standing. The pathophysiology of OT is not well understood but there is a relationship between the sensation of instability and leg tremors. Despite the sensation of unsteadiness, OT patients do not fall often and balance in OT has not been formally assessed. We present a prospective blinded study comparing balance assessment in patients with OT versus healthy controls...
February 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28983421/thalamic-ventral-intermediate-nucleus-deep-brain-stimulation-for-orthostatic-tremor
#12
Alexander C Lehn, Cullen O'Gorman, Sarah Olson, Mehri Salari
BACKGROUND: Orthostatic tremor (OT) was first described in 1977. It is characterized by rapid tremor of 13-18 Hz and can be recorded in the lower limbs and trunk muscles. OT remains difficult to treat, although some success has been reported with deep brain stimulation (DBS). CASE REPORT: We report a 68-year-old male with OT who did not improve significantly after bilateral thalamic stimulation. DISCUSSION: Although some patients were described who improved after DBS surgery, more information is needed about the effect of these treatment modalities on OT, ideally in the form of randomized trial data...
2017: Tremor and Other Hyperkinetic Movements
https://www.readbyqxmd.com/read/28975048/characterizing-orthostatic-tremor-using-a-smartphone-application
#13
Arjun Balachandar, Alfonso Fasano
BACKGROUND: Orthostatic tremor is one of the few tremor conditions requiring an electromyogram for definitive diagnosis since leg tremor might not be visible to the naked eye. PHENOMENOLOGY SHOWN: An iOS application (iSeismometer, ObjectGraph LLC, New York) using an Apple iPhone 5 (Cupertino, CA, USA) inserted into the patient's sock detected a tremor with a frequency of 16.4 Hz on both legs. EDUCATIONAL VALUE: The rapid and straightforward accelerometer-based recordings accomplished in this patient demonstrate the ease with which quantitative analysis of orthostatic tremor can be conducted and, importantly, demonstrates the potential application of this approach in the assessment of any lower limb tremor...
2017: Tremor and Other Hyperkinetic Movements
https://www.readbyqxmd.com/read/28879902/review-of-tremor-in-parkinson-s-disease-and-atypical-parkinsonian-disorders
#14
Pooja Mailankody, M Netravathi, Pramod Kumar Pal
Rest tremor (RT), a cardinal feature of Parkinson's disease (PD) is often accompanied by other types of tremor such as action tremor, which includes postural tremor, kinetic tremor, re-emergent tremor (ReT), and orthostatic tremor (OT). Literature on other tremors of PD, especially ReT and OT, is scarce. Tremor can be present in any of the atypical parkinsonian disorders such as progressive supranuclear palsy, multiple system atrophy, corticobasal degeneration, and dementia with Lewy bodies. RT can even be the presenting symptom of these disorders...
September 2017: Neurology India
https://www.readbyqxmd.com/read/28631862/thalamic-deep-brain-stimulation-for-orthostatic-tremor-a-multicenter-international-registry
#15
Aristide Merola, Alfonso Fasano, Anhar Hassan, Jill L Ostrem, Maria Fiorella Contarino, Mark Lyons, Joachim K Krauss, Marc E Wolf, Bryan T Klassen, Anne-Fleur van Rootselaar, Ignacio Regidor, Andrew P Duker, William Ondo, Jorge Guridi, Jens Volkmann, Aparna Wagle Shukla, George T Mandybur, Michael S Okun, Karsten Witt, Philip A Starr, Günther Deuschl, Alberto J Espay
BACKGROUND: We report the accumulated experience with ventral intermediate nucleus deep brain stimulation for medically refractory orthostatic tremor. METHODS: Data from 17 patients were reviewed, comparing presurgical, short-term (0-48 months), and long-term (≥48 months) follow-up. The primary end point was the composite activities of daily living/instrumental activities of daily living score. Secondary end points included latency of symptoms on standing and treatment-related complications...
August 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28599949/quetiapine-extended-release-versus-aripiprazole-in-children-and-adolescents-with-first-episode-psychosis-the-multicentre-double-blind-randomised-tolerability-and-efficacy-of-antipsychotics-tea-trial
#16
Anne Katrine Pagsberg, Pia Jeppesen, Dea Gowers Klauber, Karsten Gjessing Jensen, Ditte Rudå, Marie Stentebjerg-Olesen, Peter Jantzen, Simone Rasmussen, Eva Ann-Sofie Saldeen, Maj-Britt Glenn Lauritsen, Niels Bilenberg, Anne Dorte Stenstrøm, Louise Nyvang, Sarah Madsen, Thomas M Werge, Theis Lange, Christian Gluud, Maria Skoog, Per Winkel, Jens Richardt M Jepsen, Birgitte Fagerlund, Christoph U Correll, Anders Fink-Jensen
BACKGROUND: Head-to-head trials to guide antipsychotic treatment choices for paediatric psychosis are urgently needed because extrapolations from adult studies might not be implementable. In this superiority trial with two-sided significance testing, we aimed to compare the efficacy and safety of quetiapine-extended release (quetiapine-ER) versus aripiprazole in children and adolescents with first-episode psychosis, to determine whether differences between the two treatments were sufficient to guide clinicians in their choice of one drug over the other...
August 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28150091/reliability-and-validity-of-the-short-version-of-udvalg-for-kliniske-undersogelser-in-antipsychotic-treatment
#17
Kun-Po Chen, For-Wey Lung
The aim of this study was to develop a reliable and valid short version of the Udvalg for Kliniske Undersogelser (UKU) to efficiently evaluate the side effects of antipsychotics in patients with schizophrenia. This multi-site study included 10 hospitals, which included 331 inpatients and outpatients diagnosed with schizophrenia. UKU, Clinical Global Impression-Severity (CGI-S), Personal and Social Performance (PSP) and dosage of paliperidone were collected. The predictive validity of the UKU-short version, as well as that of the CGI-S, PSP and paliperidone dosages, was analyzed using structural equation modeling (SEM), latent growth models (LGM), and confirmatory factor analysis to test its content and construct validity...
December 2017: Psychiatric Quarterly
https://www.readbyqxmd.com/read/28101372/lessons-i-have-learned-from-my-patients-everyday-life-with-primary-orthostatic-tremor
#18
Marie Vidailhet, Emmanuel Roze, Lucie Maugest, Cécile Gallea
BACKGROUND: Primary orthostatic tremor is a rare disorder that is still under-diagnosed or misdiagnosed. Motor symptoms are fairly characteristics but the real impact on the patient's every day life and quality of life is under-estimated. The "how my patients taught me" format describes the impact on the patients' every day life with their own words, which is rarely done. CASE PRESENTATION: A 46 year old lady was diagnosed primary orthostatic tremor (POT) based on the cardinal symptoms: feelings of instability, leg tremor and fear of falling in the standing position, improvement with walking and disappearance while sitting, frequency of Tremor in the 13-18Hz range, normal neurological examination...
2017: Journal of Clinical Movement Disorders
https://www.readbyqxmd.com/read/28031220/pathological-ponto-cerebello-thalamo-cortical-activations-in-primary-orthostatic-tremor-during-lying-and-stance
#19
Florian Schöberl, Katharina Feil, Guoming Xiong, Peter Bartenstein, Christian la Fougére, Klaus Jahn, Thomas Brandt, Michael Strupp, Marianne Dieterich, Andreas Zwergal
Primary orthostatic tremor is a rare neurological disease characterized mainly by a high frequency tremor of the legs while standing. The aim of this study was to identify the common core structures of the oscillatory circuit in orthostatic tremor and how it is modulated by changes of body position. Ten patients with orthostatic tremor and 10 healthy age-matched control subjects underwent a standardized neurological and neuro-ophthalmological examination including electromyographic and posturographic recordings...
January 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/27713855/orthostatic-tremor-an-update-on-a-rare-entity
#20
REVIEW
Julián Benito-León, Ángela Domingo-Santos
BACKGROUND: Orthostatic tremor (OT) remains among the most intriguing and poorly understood of movement disorders. Compared to Parkinson's disease or even essential tremor, there are very few articles addressing more basic science issues. In this review, we will discuss the findings of main case series on OT, including data on etiology, pathophysiology, diagnostic approach, treatment strategies, and outcome. METHODS: Data for this review were identified by searching PUBMED (January 1966 to August 2016) for the terms "orthostatic tremor" or "shaky leg syndrome," which yielded 219 entries...
2016: Tremor and Other Hyperkinetic Movements
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