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Related Concept Videos

Parkinson's Disease: Overview01:15

Parkinson's Disease: Overview

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Neurodegenerative disorders are progressive diseases that cause irreversible damage and loss to neurons in specific brain areas. Examples of these disorders include Parkinson's disease, Alzheimer's disease, Multiple Sclerosis (MS), and Amyotrophic Lateral Sclerosis (ALS). These disorders share characteristics such as proteinopathies, selective neuronal vulnerability, and a complex interplay between genetic and environmental factors. The primary therapeutic goal for these conditions is...
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Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
Homeostatic Imbalances:
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Schizophrenia is a complex mental health disorder that can manifest with various positive symptoms, including thought, movement, and behavior disorders. These symptoms significantly disrupt cognitive and motor functions, leading to profound effects on an individual's ability to engage with the world.
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Parkinson's Disease: Treatment01:24

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Neurodegenerative disorders, such as Parkinson's Disease (PD), involve the gradual and irreversible destruction of neurons in particular brain areas. These disorders exhibit standard features like proteinopathies, selective vulnerability of some neurons, and an interaction of intrinsic properties, genetics, and environmental influences in neural injury.
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The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
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The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
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Related Experiment Video

Updated: Oct 13, 2025

Characterizing the Relationship Between Eye Movement Parameters and Cognitive Functions in Non-demented Parkinson's Disease Patients with Eye Tracking
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Movement Disorders Associated with COVID-19.

Mehri Salari1, Bahareh Zaker Harofteh1, Masoud Etemadifar2

  • 1Department of Neurology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Parkinson'S Disease
|November 18, 2021
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COVID-19 (coronavirus disease 2019) can cause new-onset movement disorders, primarily myoclonus and ataxia. This review of 64 cases suggests potential immune-mediated pathways, with most patients showing improvement after treatment.

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Area of Science:

  • Neurology
  • Infectious Diseases
  • Movement Disorders

Background:

  • Neurological complications of COVID-19 are increasingly recognized, with a rise in de novo movement disorders.
  • The exact pathomechanism linking SARS-CoV-2 infection to movement disorders remains unclear but is an area of active investigation.

Purpose of the Study:

  • To review and synthesize information on de novo movement disorders associated with COVID-19.
  • To present three new cases of myoclonus following COVID-19 infection and discuss their treatment outcomes.

Main Methods:

  • Systematic review of 64 published reports of de novo movement disorders in COVID-19 patients.
  • Inclusion of three original case studies of myoclonus post-COVID-19.

Main Results:

  • Myoclonus and ataxia are the most frequently reported movement disorders following COVID-19.
  • Other observed disorders include tremor, chorea, and hypokinetic-rigid syndrome (parkinsonism).
  • The three presented cases of myoclonus showed partial to complete recovery with treatment.

Conclusions:

  • While the incidence is low, COVID-19 is associated with a spectrum of de novo movement disorders.
  • Immune-mediated and post-infectious pathways are the most suspected mechanisms.
  • Parkinson's disease may have a complex relationship with COVID-19 outcomes.