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Parkinson's Disease: Overview

Parkinson's Disease: Overview

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...

Parkinson Disease l: Introduction

Parkinson 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...

Parkinson Disease ll: Pathophysiology

Parkinson Disease ll: Pathophysiology

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...

Alterations in Muscle Tone lll

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...

Parkinson's Disease: Treatment

Parkinson's Disease: Treatment

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.
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of its...

Alterations in Muscle Tone ll

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...

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Related Experiment Video

Updated: Jul 8, 2026

Technique for Intranasal Administration of α-Synuclein Aggregates

Technique for Intranasal Administration of α-Synuclein Aggregates

Published on: November 8, 2024

Progressive supranuclear palsy.

Christine D Esper¹, William J Weiner, Stewart A Factor

¹Department of Neurology Emory University School of Medicine, Atlanta, GA, USA.

Reviews in Neurological Diseases

|January 16, 2008

Summary

This summary is machine-generated.

Progressive supranuclear palsy (PSP) is a common Parkinson-plus disorder. Definitive diagnosis requires neuropathology, as no biological markers exist, and treatments are supportive.

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Published on: August 16, 2020

Area of Science:

Neurology
Neuroscience
Pathology

Background:

Progressive supranuclear palsy (PSP) identified in 1964.
PSP is a leading atypical Parkinson-plus disorder.
Established diagnostic criteria exist from NINDS and the Society for PSP.

Observation:

Definitive diagnosis relies on neuropathological examination due to lack of biomarkers.
Clinical features include gait disturbances.
Other symptoms are supranuclear ophthalmoplegia, axial limb rigidity, and frontal lobe dysfunction.

Findings:

No current treatments modify PSP's natural course.
No drugs offer substantial symptomatic relief for PSP patients.
Supportive care measures are available for managing PSP.

Implications:

Further research is needed for PSP biomarkers.
Development of disease-modifying therapies for PSP is crucial.
Improving supportive care can enhance quality of life for PSP patients.