Hallucinations, sleep fragmentation, and altered dream phenomena in PD
In a series of consecutively randomized outpatients who had Parkinson's
disease (PD), we examined the association of three behaviors: sleep
fragmentation, altered dream phenomena, and hallucinations/illusions.
Using a log-linear model methodology, we tested the independence of each
behavior.
62% of the subjects had sleep fragmentation, 48% had altered dream
phenomena, and 26% had hallucinations/illusions. 82% of the patients with
hallucinations/illusions experienced some form of sleep disorder.
The three phenomena were not independent. The interaction between sleep
fragmentation and altered dream phenomena was strongly statistically
significant.
Likewise, a significant interaction existed between altered dream phenomena
and hallucinations/illusions.
No interaction occurred between sleep fragmentation and
hallucinations/illusions.
Sleep fragmentation, altered dream phenomena, and hallucinations/illusions
in PD should be considered distinct but often overlapping behaviors.
The close association between altered dream phenomena and hallucinations
suggests that therapeutic interventions aimed at diminishing dream-related
activities may have a specific positive impact on hallucinatory behavior.
Mov Disord 1999 Jan;14(1):117-21
Pappert EJ, Goetz CG, Niederman FG, Raman R, Leurgans S
Rush-Presbyterian-St. Luke's Medical Center, Chicago, Illinois 60612, USA.
PMID: 9918353, UI: 99114912
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