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Related Concept Videos

Alterations in Muscle Tone ll01:12

Alterations in Muscle Tone ll

Alterations in muscle tone are common manifestations of neurological disorders and reflect dysfunction within different nervous system regions. Spasticity, paratonia, and dystonia represent distinct forms of hypertonia, each with unique mechanisms, clinical features, and diagnostic importance.CharacteristicsSpasticity happens from upper motor neuron lesions and is characterized by velocity-dependent resistance to passive movement. Clinical features include:Exaggerated deep tendon reflexesClonus...
Alterations in Muscle Tone lll01:11

Alterations in Muscle Tone lll

Rigidity and myotonia are distinct abnormalities of muscle tone that affect resistance and relaxation during movement. Although both involve altered muscle contraction, they arise from different neurological and muscular mechanisms.CharacteristicsRigidity is characterized by uniform resistance to passive movement across the entire range, independent of speed, affecting flexors and extensors equally. It may appear as lead-pipe rigidity (smooth, constant resistance) or cogwheel rigidity...
Generalized Anxiety Disorder01:30

Generalized Anxiety Disorder

Generalized Anxiety Disorder (GAD) is a chronic condition characterized by excessive and uncontrollable worry that persists for at least six months, significantly interfering with daily functioning. Unlike situational anxiety, which arises in response to specific stressors, GAD often occurs without a clear cause. Individuals may experience disproportionate worry about work, health, or relationships. For instance, a person might continuously fear poor health despite normal medical evaluations or...
Seizures ll: Types01:19

Seizures ll: Types

Seizures are sudden bursts of abnormal electrical discharge in the brain that interfere with normal function. They are commonly divided into three groups: focal seizures, generalized seizures, and other types that do not fit neatly into either category.Focal SeizuresFocal seizures begin in a single brain region. When awareness is preserved, they are called focal aware seizures and may cause sensations such as tingling, unusual smells, or flashing lights. When awareness is impaired, they are...
Parkinson Disease l: Introduction01:24

Parkinson Disease l: Introduction

Parkinson’s disease is a chronic, progressive neurodegenerative disorder that primarily affects movement. It is characterized by motor symptoms such as resting tremors, muscle rigidity, bradykinesia (slowness of movement), and postural instability. Patients may notice hand tremors at rest, stiffness during movement, or a shuffling gait. In addition to motor features, non-motor symptoms include sleep disturbances, mood and behavioral changes, constipation, and cognitive impairment, all of which...
Seizures: Classification01:13

Seizures: Classification

Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:

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Related Experiment Video

Updated: Jun 28, 2026

MRI-guided Focused Ultrasound Thalamotomy for Patients with Medically-refractory Essential Tremor
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MRI-guided Focused Ultrasound Thalamotomy for Patients with Medically-refractory Essential Tremor

Published on: December 13, 2017

[Psychogenic tremor].

M Dafotakis1, C Schönfeldt-Lecuona, G R Fink

  • 1Klinik und Poliklinik für Neurologie, Klinikum der Universität zu Köln. m.dafotakis@fz-juelich.de

Fortschritte Der Neurologie-Psychiatrie
|November 7, 2008
PubMed
Summary
This summary is machine-generated.

Psychogenic tremor, a common functional movement disorder, presents with specific clinical signs and can be diagnosed using tools like electromyography. Novel treatments, including transcranial magnetic stimulation, are emerging for this condition.

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Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis
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Area of Science:

  • Neurology
  • Psychiatry
  • Movement Disorders

Context:

  • Psychogenic tremor is the most prevalent psychogenic movement disorder, comprising up to 40% of cases.
  • Patients often exhibit characteristic clinical features such as acute onset and distractibility.
  • Diagnostic support is available through clinical tests and tools like electromyographic and kinematic recordings.

Purpose:

  • This review aims to discuss the clinical presentation of psychogenic tremor.
  • It also covers the diagnostic approaches for identifying psychogenic tremor.
  • Furthermore, it introduces novel therapeutic strategies for managing psychogenic tremor.

Summary:

  • Psychogenic tremor is characterized by specific clinical signs including acute onset, distractibility, and variable tremor characteristics.
  • Diagnostic evaluation involves clinical assessment and supportive tools such as electromyography and kinematic recordings.
  • Emerging treatments, notably transcranial magnetic stimulation, are being explored for psychogenic tremor.

Impact:

  • Improved understanding of psychogenic tremor's clinical manifestations and diagnostic pathways.
  • Introduction of advanced diagnostic tools for more accurate identification.
  • Exploration of innovative therapeutic interventions like transcranial magnetic stimulation for better patient outcomes.