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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 to...

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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...

Parkinson's Disease: Treatment

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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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Parkinson Disease ll: Pathophysiology

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Parkinson disease (PD) is a progressive neurodegenerative disorder primarily affecting movement, with additional non-motor features. Its pathophysiology involves complex interactions among genetic susceptibility, environmental exposures, and cellular dysfunction, including dopaminergic neuron loss, protein aggregation, and mitochondrial impairment.Selective NeurodegenerationA key feature is the degeneration of dopaminergic neurons in the substantia nigra pars compacta, leading to reduced...

REM Sleep Behavior Disorder

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Related Experiment Video

Updated: May 19, 2026

Marble Burying and Nestlet Shredding as Tests of Repetitive, Compulsive-like Behaviors in Mice

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[Repetitive impulse-associated behavioral disorders in Parkinson's disease].

R Katzenschlager¹, K S Goerlich, T van Eimeren

¹Neurologische Abteilung, Donauspital/SMZ-Ost, Wien, Österreich.

|August 11, 2012

Summary

Parkinson's disease (PD) patients frequently experience behavioral disorders like impulse control disorders (ICDs) and dopamine dysregulation syndrome (DDS). Dopamine agonist treatment is a key risk factor, necessitating careful management strategies.

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Last Updated: May 19, 2026

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Induction and Assessment of Levodopa-induced Dyskinesias in a Rat Model of Parkinson's Disease

Induction and Assessment of Levodopa-induced Dyskinesias in a Rat Model of Parkinson's Disease

Published on: October 14, 2021

Area of Science:

Neuroscience
Psychiatry
Movement Disorders

Context:

Parkinson's disease (PD) is frequently accompanied by behavioral disorders.
Impulse control disorders (ICDs) affect 13-14% of PD patients, including pathological gambling, binge eating, compulsive shopping, and hypersexuality.
Dopamine dysregulation syndrome (DDS) and punding are other significant behavioral issues in PD patients.

Purpose:

To review the behavioral disorders associated with Parkinson's disease.
To identify treatment-related and shared risk factors for these disorders.
To discuss the underlying neuronal mechanisms and current management strategies.

Summary:

Key risk factors include dopamine agonists for ICDs and high dopaminergic doses for DDS and punding.
Shared risk factors encompass young age, impulsive traits, depression, and potentially dyskinesia.
Neuronal changes in the reward system and orbitofrontal cortex are implicated.
Current management for ICDs involves reducing or discontinuing dopamine agonists, though evidence is limited.

Impact:

Highlights the significant impact of behavioral disorders on PD patients' quality of life.
Identifies critical risk factors associated with dopaminergic therapies.
Underscores the need for further research into effective management strategies for these challenging conditions.