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Auditory hallucinations in Parkinson's disease

R Inzelberg1, S Kipervasser, A D Korczyn

  • 1Department of Neurology, Tel-Aviv Medical Center and Tel-Aviv University, Sackler Faculty of Medicine, Ramat-Aviv, Israel.

Journal of Neurology, Neurosurgery, and Psychiatry
|May 12, 1998
PubMed
Summary

Auditory hallucinations are documented in Parkinson's disease, often accompanying visual hallucinations. This study found they occur in patients with cognitive impairment and are not linked to disease duration or levodopa treatment.

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Area of Science:

  • Neurology
  • Psychiatry

Background:

  • Visual hallucinations are common in Parkinson's disease (PD).
  • Auditory hallucinations (AH) in PD have not been systematically studied.
  • This research investigates the occurrence and characteristics of AH in PD patients.

Purpose of the Study:

  • To systematically document the occurrence of auditory hallucinations in Parkinson's disease patients.
  • To characterize the nature of auditory hallucinations and associated factors.
  • To explore the relationship between hallucinations, cognitive status, and other symptoms in PD.

Main Methods:

  • 121 consecutive Parkinson's disease patients were evaluated.
  • Cognitive state assessed using the Short Mental Test (SMT).
  • Detailed assessment of hallucination types (visual and auditory), their characteristics, and associated clinical features.

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Main Results:

  • 37% of patients reported hallucinations; 8% experienced both visual and auditory hallucinations.
  • No patient reported isolated auditory hallucinations; they co-occurred with visual hallucinations.
  • Auditory hallucinations were repetitive human voices, often incomprehensible, and not influenced by age, disease duration, or levodopa.
  • Cognitive impairment was more prevalent in patients with hallucinations (64% visual, 50% auditory).
  • Depression and other psychotic features were noted in patients with auditory hallucinations.

Conclusions:

  • Auditory hallucinations occur in Parkinson's disease, particularly in those with visual hallucinations.
  • Cognitive impairment is a significant factor associated with auditory hallucinations in PD.
  • Auditory hallucinations in PD are distinct and warrant further clinical attention.