Auditory hallucinations in Parkinson’s disease
- aDepartment of Neurology, Tel-Aviv Medical Center and Tel-Aviv University, Sackler Faculty of Medicine, Ramat-Aviv, Israel, bPresent address for R Inzelberg Neurology Department, Hillel Yaffe Medical Center, Hadera, Israel
- Professor Amos D Korczyn, Neurology Department, Sackler School of Medicine, Tel-Aviv University, Ramat-Aviv 69978, Israel. Tel: 00972 3 640 8757; Fax: 00972 3 640 9113; Email: neuro13{at}ccsg.tau.ac.il
- Received 17 June 1996
- Revised 16 May 1997
- Accepted 1 August 1997
Abstract
Whereas visual hallucinations are often found among patients with Parkinson’s disease, the occurrence of auditory hallucinations has never been systematically documented. The occurrence, past and present, of auditory hallucinations has been studied in 121 consecutive patients with Parkinson’s disease attending a movement disorders clinic. The cognitive state was evaluated using the short mental test (SMT). Hallucinations were reported for 45 patients (37%); 35 (29%) had only visual hallucinations and 10 (8%) both visual and auditory hallucinations. No patient reported auditory hallucinations unaccompanied by visual hallucinations. The auditory hallucinations occurred repeatedly, consisting of human voices. They were non-imperative (n=9), non-paranoid (n=9), and often incomprehensible (n=5). They were not obviously influenced by the patients’ age, duration of disease, or treatment with levodopa. Cognitive impairment was more common among hallucinating patients (64%, 50%, and 25% among patients with visual hallucinations, auditory hallucinations, and non-hallucinating parkinsonian patients respectively). Depression necessitating antidepressants was present in five of 10 and other psychotic features in six patients with auditory hallucinations. It is concluded that auditory hallucinations occur in Parkinson’s disease, particularly in patients who also have visual hallucinations and are cognitively impaired.
