Agreement among movement disorder specialists on the clinical diagnosis of essential tremor

1997 ◽  
Vol 12 (6) ◽  
pp. 973-976 ◽  
Author(s):  
Sylvain Chouinard ◽  
Elan D. Louis ◽  
Stanley Fahn
Keyword(s):  
Movement Disorder ◽  
Essential Tremor ◽  
Clinical Diagnosis

Taakspecifieke focale dystonie bij musici

2021 ◽  
Author(s):  
T. DOOMS
Keyword(s):  
Movement Disorder ◽  
Clinical Diagnosis ◽  
Clinical Picture ◽  
Specific Activity ◽  
Muscle Contractions ◽  
Focal Dystonia ◽  
Lower Limbs ◽  
Musical Activity ◽  
Neurological Movement Disorder ◽  
Rule Out

Task-specific focal dystonia in musicians Task-specific focal dystonia is a neurological movement disorder characterized by involuntary contractions during a specific activity. In musicians, the abnormal movement can occur while playing an instrument or while singing. The muscle contractions are usually painless, but the function of the affected region is disturbed. The clinical picture occurs more in men than in women and is most frequent in pianists or guitarists. The abnormality is usually localized in the fingers, the hands or the entire arm. Drummers can have problems in the lower limbs. Brass and woodwind players can lose control of the lips, tongue or facial muscles. This is called “embouchure dystonia”. Singers suffer from the larynx. The diagnosis is a clinical diagnosis. It is important to observe the musician making music. Outside the musical activity, all tests are normal. Technical examinations can be useful to rule out other diagnoses. The therapy is difficult and often unsatisfactory. In many cases, the disease predicts the end of the musical career.

Essential Tremor: Five New Things

2021 ◽  
pp. 10.1212/CPJ.0000000000001145
Author(s):  
Abhishek Lenka ◽  
Sanjay Pandey
Keyword(s):  
Magnetic Resonance ◽  
Essential Tremor ◽  
Clinical Diagnosis ◽  
Focused Ultrasound ◽  
Consensus Statement ◽  
Cerebellar Degeneration ◽  
Considerable Progress ◽  
Clinical Aspects ◽  
Definition Of

ABSTRACTPurpose of the review:To highlight five new things in the research and clinical aspects of essential tremor (ET).Recent findings:The introduction of a new definition of ET and a new category “ET plus” were the major themes of the recent consensus statement. This new change demands a change in the approach to the clinical diagnosis of ET and related diseases. From the pathogenesis standpoint, the cerebellar neurodegenerative model seems to have numerous evidence in its favor compared to the olivary model which has largely fallen out of favor. From the standpoint of therapeutics, magnetic resonance-guided focused ultrasound (MRgFUS) thalamotomy has enriched the therapeutic armamentarium.Summary:There has been considerable progress in the field of ET. We discuss five new things in this article which include- (i) new definition (ii) ET plus (iii) approach to the diagnosis of ET, (iv) cerebellar degeneration, and (v) MRgFUS thalamotomy.

Beginning

2021 ◽  
pp. 1-12
Author(s):  
Allan Hugh Cole
Keyword(s):  
Primary Care ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Movement Disorder ◽  
Clinical Diagnosis ◽  
Personal Narrative ◽  
Primary Care Doctor ◽  
Doctor Who ◽  
Brain Scan ◽  
Movement Disorder Specialist

Through personal narrative, this chapter details the author’s experience of first becoming aware that something was not right with his body. This experience leads to visiting his primary care doctor who tells him that she is concerned about the possibility of his having Parkinson’s disease and then refers the author to a neurologist who is a movement disorder specialist. He is examined by this neurologist, who says, “What worries me is that I think you are in the early stages of Parkinson’s disease,” but who wants the author to have a brain scan that will confirm the clinical diagnosis given his young age and subtle symptoms. The author leaves his office, drives home, and informs his wife that this doctor thinks he have Parkinson’s disease. Here begins his new life as a person with Parkinson’s (PwP).

scholarly journals Research on Characteristics of Essential Tremor in the Latvian Population / Esenciālā Tremora Īpatnību Izpēte Latvijas Populācijā

2015 ◽  
Vol 69 (5) ◽  
pp. 259-264
Author(s):  
Ligita Smeltere ◽  
Elvīra Smeltere
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Movement Disorder ◽  
Essential Tremor ◽  
Severe Form ◽  
Progressive Development ◽  
Kinetic Tremor

Abstract Essential tremor (ET) is a common movement disorder, characterised by symptoms such as bilateral postural and kinetic tremor with prevalent manifestation in hands. The disease has chronic progressive development. In the case of continuous severe form it may resemble Parkinson’s disease (PD) and sometimes comorbidity with PD is possible. Although both diseases have different pathogenesis and treatment, some tremor characteristics for both are similar, thus causing difficulties and mistakes in diagnosing. The aim of the research was to determine ET characteristics within the Latvian population to identify possible causes for making mistakes.

scholarly journals Cerebellar Pathology of a Dual Clinical Diagnosis: Patients with Essential Tremor and Dystonia

2012 ◽  
Vol 2 (0) ◽  
pp. 12 ◽  
Author(s):  
Karen Ma ◽  
Rachel Babij ◽  
Etty Cortés ◽  
Jean-Paul G. Vonsattel ◽  
Elan D. Louis
Keyword(s):  
Essential Tremor ◽  
Clinical Diagnosis

scholarly journals Modeling mechanisms of tremor reduction for essential tremor using symmetric biphasic DBS

2019 ◽  
Author(s):  
Shane Lee ◽  
Wael F Asaad ◽  
Stephanie R Jones
Keyword(s):  
Deep Brain Stimulation ◽  
Side Effects ◽  
Movement Disorder ◽  
Essential Tremor ◽  
Brain Stimulation ◽  
Future Studies ◽  
Tremor Frequency ◽  
Ventral Intermediate Nucleus ◽  
Different Shapes ◽  
Deep Brain

AbstractEssential tremor (ET) is the most common movement disorder, in which the primary symptom is a prominent, involuntary 4–10 Hz movement. For severe, medication refractory cases, deep brain stimulation (DBS) targeting the ventral intermediate nucleus of the thalamus (VIM) can be an effective treatment for cessation of tremor and is thought to work in part by disrupting tremor frequency oscillations (TFOs) in VIM. However, DBS is not universally effective and may be further disrupting cerebellar-mediated activity in the VIM. Here, we applied biophysically detailed computational modeling to investigate whether the efficacy of DBS is affected by the mechanism of generation of TFOs or by the pattern of stimulation. We simulated the effects of DBS using standard, asymmetric pulses as well as biphasic, symmetric pulses to understand biophysical mechanisms of how DBS disrupts TFOs generated either extrinsically or intrinsically. The model results suggested that the efficacy of DBS in the VIM is affected by the mechanism of generation of TFOs. Symmetric biphasic DBS reduced TFOs more than standard DBS in both networks, and these effects were stronger in the intrinsic network. For intrinsic tremor frequency activity, symmetric biphasic DBS was more effective at reducing TFOs. Simulated non-tremor signals were also transmitted during symmetric biphasic DBS, suggesting that this type of DBS may help to reduce side effects caused by disruption of the cerebellothalamocortical pathway. Biophysical details in the model provided a mechanistic interpretation of the cellular and network dynamics contributing to these effects that can be empirically tested in future studies.Significance StatementEssential tremor (ET) is a common movement disorder, whose primary symptom is an involuntary rhythmic movement of the limbs or head. An area of the human tha-lamus demonstrates electrical activity that oscillates at the frequencies of tremor, and deep brain stimulation (DBS) in this area can reduce tremor. It is not fully understood how DBS affects tremor frequency activity in the thalamus, and studying different patterns of DBS stimulation may help to clarify these mechanisms. We created a computational model of different shapes of DBS and studied how they reduce different hypothesized generators of tremor frequency activity. A greater understanding of how DBS affects the thalamus may lead to improved treatments to reduce tremor and alleviate side effects in patients with ET.

EXPERTISE OF DISABILITY IN ESSENTIAL TREMOR

2018 ◽  
Vol 4 (1-2) ◽  
pp. 20-25
Author(s):  
O.P. Onopriyenko
Keyword(s):  
Essential Tremor ◽  
Clinical Diagnosis ◽  
Early Diagnostics ◽  
Prevention Of Disability

The purpose of our research was to study the medical and social expertise, early diagnostics, examples of the formulation of a clinical diagnosis, as well as current issues on the prevention of disability, and the principles of rehabilitation in essential tremor. Keywords: essential tremor, classification, treatment, expertise of disability, prophylaxis, rehabilitation.

Tremors

2016 ◽  
Author(s):  
Alfonso Fasano ◽  
Günther Deuschl
Keyword(s):  
Movement Disorder ◽  
Essential Tremor ◽  
Involuntary Movement ◽  
The Body ◽  
Drug Induced ◽  
Parkinsonian Tremor ◽  
Dystonic Tremor ◽  
Physiologic Tremor ◽  
Disease Definition ◽  
Holmes Tremor

Tremor is the most common movement disorder and denotes a rhythmic and involuntary movement of one or several regions of the body. This review covers disease definition, essential tremor, enhanced physiologic tremor, parkinsonian tremor, dystonic tremor, orthostatic tremor, cerebellar tremor, Holmes tremor, neuropathic tremor, palatal tremor, drug-induced and toxic tremors, functional tremor, rare tremor syndromes, tremorlike conditions, and treatment of tremor. Figures show action tremor assessment, the central nervous system circuits of tremor, magnetic resonance imaging findings in specific tremor conditions, general management of tremor patients, an algorithm for the treatment of parkinsonian tremor, and an algorithm for the treatment of dystonic tremor and primary writing tremor. Tables list types of tremor according to the condition of activation, tremor conditions in newborns and during childhood, clinical features of the most common tremor syndromes, motor signs other than tremor and nonmotor features of essential tremor patients, Movement Disorder Society consensus criteria for the diagnosis of essential tremor, genetic and environmental causes of essential tremor, causes of enhanced physiologic tremor, drugs and toxins known to cause tremor, paroxysmal tremors, pseudorhythmic myoclonus in the differential diagnosis of tremor, and pharmacologic management of essential tremor. Key words: essential tremor, movement disorder, pathologic tremor, physiologic tremor, tremor This review contains 6 highly rendered figures, 7 videos, 11 tables, and 163 references.

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