Related Experiment Video
Updated: Aug 1, 2026
09:51
Rapid Genotyping of Animals Followed by Establishing Primary Cultures of Brain Neurons
Published on: January 29, 2015
Familial paroxysmal dystonia induced by exercise
Journal of Neurology, Neurosurgery, and Psychiatry
|March 1, 1984
Summary
This study describes a rare form of exercise-induced dystonia in a mother and daughter. The condition causes involuntary movements triggered by prolonged exertion, particularly in the lower limbs.
Area of Science:
- Neurology
- Movement Disorders
- Genetics
Background:
- Paroxysmal dystonia is a rare movement disorder characterized by involuntary muscle contractions.
- Exercise-induced dystonia can manifest in various forms, often with a genetic component.
- Previous reports suggest familial inheritance patterns for certain types of dystonia.
Observation:
- A mother and daughter presented with paroxysmal dystonia.
- Attacks were consistently provoked by prolonged exertion in the lower limbs.
- Sudden movements did not trigger the dystonic episodes.
Findings:
- Involuntary movements could be induced focally in any limb through localized exercise.
- Sensory stimulation restricted to a specific limb also elicited focal dystonic movements.
- This suggests a localized or limb-specific susceptibility to dystonia induction.
Implications:
- Understanding the triggers and patterns of exercise-induced dystonia is crucial for diagnosis and management.
- The findings contribute to the understanding of the pathophysiology of focal dystonia.
- Further research into the genetic and neurological underpinnings of this specific dystonia presentation is warranted.
More Related Videos
10:05Measurement & Analysis of the Temporal Discrimination Threshold Applied to Cervical Dystonia
Published on: January 27, 2018
10:41Implantation of Osmotic Pumps and Induction of Stress to Establish a Symptomatic, Pharmacological Mouse Model for DYT/PARK-ATP1A3 Dystonia
Published on: September 12, 2020
Related Concept Videos
01:28Disorders 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...
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...
01:29Tetanus
Tetanus is a life-threatening neurological disorder characterized by persistent muscle contractions and spastic paralysis. It is caused by Clostridium tetani, a motile, Gram-positive, rod-shaped, obligate anaerobe. These bacteria produce terminal endospores, giving them a distinctive “lollipop” or “tennis-racket” appearance. They thrive in anaerobic environments, such as those found in deep puncture wounds.Once introduced into the body, the spores germinate into vegetative cells. These cells...
01:24Parkinson 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...
01:21Huntington 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,...
01:12Alterations 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...
01:11Alterations 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...