Pain Experience in Dementia Subtypes: A Systematic Review

Area of Science:

• Neuroscience
• Gerontology
• Pain Research

Background:

• Growing research on pain in dementia, but limited focus on how dementia subtypes influence pain experience.
• A 2003 review highlighted a link between dementia subtype and pain; an updated review is necessary.
• Understanding these differences is crucial for accurate pain assessment and management in diverse dementia populations.

Purpose of the Study:

• To systematically review and update the evidence on the relationship between major dementia subtypes and pain experience.
• To synthesize findings from studies investigating Alzheimer's dementia (AD), vascular dementia (VaD), frontotemporal dementia (FTD), and dementia with Lewy Bodies (DLB) concerning pain.

Main Methods:

• Systematic literature search of PubMed, Embase, PsycINFO, CINAHL, and Cochrane Library.
• Inclusion criteria: major dementia subtypes (AD, VaD, FTD, DLB), age ≥60 years, and assessment of pain experience.
• Identified 12 studies for AD, 3 for VaD, 1 for FTD, and 0 for DLB.

Main Results:

• Alzheimer's dementia (AD): Clinical pain studies suggest reduced pain experience; experimental studies show inconsistent results.
• Vascular dementia (VaD): Caregiver ratings indicate similar pain to controls, but more painful sites; self-reports show higher pain levels.
• Frontotemporal dementia (FTD): Significantly lower sensitivity to experimental pain observed.

Conclusions:

• Existing literature suggests that dementia subtypes differentially affect pain experience.
• Findings indicate potential variations in pain perception across AD, VaD, and FTD.
• Further research is essential to elucidate these relationships and improve pain management strategies for individuals with dementia.