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Related Concept Videos

Muscle Stimulation Frequency01:22

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Two primary types of muscle contractions are isotonic and isometric, each serving unique functions and involving distinct mechanisms. Both isotonic and isometric contractions are integral to the body's complex system of movement and stability. Isotonic exercises contribute significantly to functional strength and movement, while isometric contractions are crucial for maintaining posture and joint stability.
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Task Specific Tremors.

Joseph H Friedman1

  • 1Editor-in- chief of the Rhode Island Medical Journal, Professor and the Chief of the Division of Movement Disorders, Department of Neurology at the Alpert Medical School of Brown University, chief of Butler Hospital's Movement Disorders Program and first recipient of the Stanley Aronson Chair in Neurodegenerative Disorders.

Rhode Island Medical Journal (2013)
|July 1, 2015
PubMed
Summary
This summary is machine-generated.

Essential tremor can manifest as task-specific symptoms, like primary writing tremor. Standard tremor assessments are insufficient; patients must be evaluated during the activity that triggers their specific tremor symptoms.

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Area of Science:

  • Neurology
  • Movement Disorders

Background:

  • Essential tremor (ET) is a common movement disorder.
  • ET can present with task-specific symptoms, such as tremors predominantly occurring during specific activities.
  • Primary writing tremor is a recognized subtype of ET.

Purpose of the Study:

  • To highlight the limitations of standard tremor assessments.
  • To emphasize the importance of evaluating patients performing the task that elicits their tremor.

Main Methods:

  • Case report of a patient with bilateral hand tremors exclusively during writing.
  • Discussion of the diagnostic approach for task-specific tremors.
  • Comparison of standard neurological examination techniques with task-specific functional testing.

Main Results:

  • The patient's tremors were task-specific to writing, consistent with primary writing tremor.
  • Standard clinical tremor assessments (postural, finger-to-nose) did not reveal significant abnormalities.
  • Functional testing during writing demonstrated the characteristic tremor.

Conclusions:

  • Standard tremor assessments are inadequate for diagnosing task-specific tremors like primary writing tremor.
  • Clinical evaluation must include testing the patient during the activity that provokes the tremor for accurate diagnosis and management.