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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...
Sex-linked Disorders01:43

Sex-linked Disorders

Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
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...
Huntington Disease l: Introduction01:21

Huntington Disease l: Introduction

Huntington disease or HD is a progressive, fatal neurodegenerative disorder inherited in an autosomal dominant pattern.PathophysiologyIt is caused by expansion of the CAG trinucleotide repeat in the HTT gene on chromosome 4 (4p16.3), producing an abnormal huntingtin protein with an expanded polyglutamine tract. This misfolded protein disrupts cellular function, leading to neuronal death. Normal alleles have ≤26 repeats, 27–35 are intermediate (risk of expansion), 36–39 show reduced penetrance,...
Pedigree Analysis01:35

Pedigree Analysis

Overview

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Related Experiment Video

Updated: Jul 16, 2026

Implantation of Osmotic Pumps and Induction of Stress to Establish a Symptomatic, Pharmacological Mouse Model for DYT/PARK-ATP1A3 Dystonia
10:41

Implantation of Osmotic Pumps and Induction of Stress to Establish a Symptomatic, Pharmacological Mouse Model for DYT/PARK-ATP1A3 Dystonia

Published on: September 12, 2020

The inherited dystonias.

Pedro Gonzalez-Alegre1

  • 1Department of Neurology, Carver College of Medicine at The University of Iowa, Iowa City 52242, USA.

Seminars in Neurology
|March 29, 2007
PubMed
Summary

Recent advances in inherited dystonias offer new insights for neurologists. This review proposes a clinical classification and highlights genetics, like DYT1, to aid patient evaluation.

Area of Science:

  • Neurology
  • Genetics
  • Neurodegenerative Diseases

Background:

  • Inherited dystonias are a group of neurological disorders with significant recent research advancements.
  • Understanding the genetic basis is crucial for diagnosis and management.

Purpose of the Study:

  • To review recent discoveries in inherited dystonias.
  • To propose a clinical classification for easier patient evaluation.
  • To illustrate the role of genetics, using DYT1 dystonia as an example.

Main Methods:

  • Literature review of recent advances in inherited dystonias.
  • Development of a clinician-based clinical classification system.
  • Case example focusing on DYT1 dystonia and its genetic evaluation.

More Related Videos

Measurement &amp; Analysis of the Temporal Discrimination Threshold Applied to Cervical Dystonia
10:05

Measurement & Analysis of the Temporal Discrimination Threshold Applied to Cervical Dystonia

Published on: January 27, 2018

Related Experiment Videos

Last Updated: Jul 16, 2026

Implantation of Osmotic Pumps and Induction of Stress to Establish a Symptomatic, Pharmacological Mouse Model for DYT/PARK-ATP1A3 Dystonia
10:41

Implantation of Osmotic Pumps and Induction of Stress to Establish a Symptomatic, Pharmacological Mouse Model for DYT/PARK-ATP1A3 Dystonia

Published on: September 12, 2020

Measurement &amp; Analysis of the Temporal Discrimination Threshold Applied to Cervical Dystonia
10:05

Measurement & Analysis of the Temporal Discrimination Threshold Applied to Cervical Dystonia

Published on: January 27, 2018

Main Results:

  • Significant progress has been made in understanding the genetic underpinnings of dystonias.
  • A proposed clinical classification can aid practicing neurologists in patient assessment.
  • Genetic insights, exemplified by DYT1, are valuable for diagnosing and managing inherited dystonias.

Conclusions:

  • Recent advances in inherited dystonias provide valuable information for clinical practice.
  • A structured clinical approach combined with genetic knowledge improves patient evaluation.
  • The field is rapidly evolving, offering new diagnostic and therapeutic possibilities for neurologists.