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Does ageing aggravate parkinsonian disability?

J Blin1, B Dubois, A M Bonnet

  • 1Service de Neurologie et Neuropsychologie, Hôpital de la Salpêtrière, Paris, France.

Journal of Neurology, Neurosurgery, and Psychiatry
|September 1, 1991
PubMed
Summary
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Parkinson's disease onset age impacts levodopa response. Late-onset Parkinson's patients show a poorer response to levodopa therapy, potentially due to non-dopaminergic brain lesions.

Area of Science:

  • Neurology
  • Movement Disorders
  • Parkinson's Disease Research

Background:

  • Age of onset is a key factor in Parkinson's disease (PD) progression.
  • Understanding how onset age influences symptom severity and treatment response is crucial for patient management.

Purpose of the Study:

  • To investigate the influence of early versus late age of onset on motor symptom severity in Parkinson's disease.
  • To compare the effectiveness of levodopa therapy in early-onset versus late-onset Parkinson's disease patients.

Main Methods:

  • Two patient groups (early onset <50 years, late onset >60 years) were compared.
  • Motor scores were assessed with and without levodopa, matched for disease duration (Study I) and residual motor score (Study II).

Main Results:

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  • Baseline motor disability off levodopa was similar between early and late onset groups.
  • Late-onset patients had a significantly higher residual motor score (on levodopa) in Study I.
  • In Study II (matched for residual score), only gait disorder was more severe in late-onset patients.

Conclusions:

  • Age of onset primarily influences levodopa treatment response in Parkinson's disease.
  • Late onset may be associated with increased non-dopaminergic brain lesions, contributing to gait disturbances.