Journal List > Dement Neurocogn Disord > v.11(3) > 1120788

Han, Ha, Hong, Choi, Ahn, Park, Ryoo, Yoon, and Choi: Behavioral and Psychological Symptoms in Patients with Parkinson's Disease According to Cognitive Function

Abstract

Background

Parkinson's disease (PD) is a progressive neurodegenerative disorder characterized by motor and nonmotor symptoms such as cognitive impairment and neuropsychiatric symptoms. The aim of this study was to investigate the spectrum of neuropsychiatric symptoms in PD according to cognitive function.

Methods

One hundred twenty seven patients with PD were consecutively recruited. They had undergone an intensive interview with a neurologist and the Seoul Neuropsychological Screening Battery-dementia version, and were divided into three groups: 27 patients in PD with normal cognition (PDNC), 57 in PD with mild cognitive impairment (PDMCI), and 43 in PD with Dementia (PDD). Forty five healthy controls without memory complaints were also recruited. The caregivers of all participants administered the Caregiver-Administered Neuropsychiatric Inventory (CGA-NPI).

Results

There were significant differences in the CGA-NPI score (22.8±20.9 vs. 6.4±10.1 vs. 1.7±3.9 vs. 1.0±1.6, p<0.001), and the prevalence of neuropsychiatric symptoms (100% vs. 64.9% vs. 37.0% vs. 44.4%, p<0.001) among PDD, PDMCI, PDNC and control groups. Depression was the most common symptom (43.3%), followed by anxiety (31.5%), apathy (26.8%), and night-time behavior (26.8%) in all PD patients. Delusion, hallucination, and aberrant motor behavior were observed frequently in PDD, but were rare in PDMCI.

Conclusions

Depression was the most common neuropsychiatric symptom in PD. The presence of delusion, hallucination, or aberrant motor behavior may suggest PDD. The neuropsychiatric symptoms were not prevalent in PD with normal cognition.

Figures and Tables

Fig. 1
Prevalence of behavioral and psychiatric symptoms in the patients with dementia associated with Parkinson's disease (PPD), those with PD with mild cognitive impairment (PDMCI), those with PD with normal cognition (PDNC), and normal controls.
*Items which were significantly different among four groups (p<0.05).
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Table 1
Clinical characteristics of the patients with dementia associated with Parkinson's disease (PPD), those with PD with mild cognitive impairment (PDMCI), those with PD with normal cognition (PDNC), and normal controls
dnd-11-104-i001

*p<0.05 vs. PDD; p<0.05 vs. PDMCI; p<0.05 vs. PDNC; §p<0.05 vs. Control.

K-MMSE, Korean Mini-Mental State Examination.

Table 2
Subscale scores of CGA-NPI in patients with PDD, PDMCI, and PDNC, and controls
dnd-11-104-i002

*p<0.05 vs. PDD; p<0.05 vs. PDMCI; p<0.05 vs. PDNC; §p<0.05 vs. Control.

CGA-NPI, Caregiver-Administered Neuropsychiatric Inventory; PDD, Dementia associated with Parkinson's disease; PDMCI, Parkinson's disease with mild cognitive impairment; PDNC, Parkinson's disease with normal cognition.

Table 3
Prevalence of behavioral and psychiatric symptoms in patients with PDD, PDMCI, and PDNC, and controls
dnd-11-104-i003

*p<0.05 vs. PDD; p<0.05 vs. PDMCI; p<0.05 vs. PDNC; §p<0.05 vs. Control; Proportion with non-zero score; mild: score of a subscale of CGA-NPI, 1-3; **clinically significant: score of a subscale of CGA-NPI≥4.

Values were presented as number (percent). PDD, Dementia associated with Parkinson's disease; PDMCI, Parkinson's disease with mild cognitive impairment; PDNC, Parkinson's disease with normal cognition.

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