Pain Severity and Interference in Different Parkinson's Disease Cognitive Phenotypes

Area of Science:

• Neurology
• Neuroscience
• Pain Management

Background:

• Chronic pain is a common and debilitating symptom in idiopathic Parkinson's disease (PD).
• Cognitive deficits frequently co-occur with chronic pain in PD, impacting daily functioning.
• Understanding the relationship between specific cognitive domains and pain is crucial for effective management.

Purpose of the Study:

• To investigate the relationship between distinct cognitive function levels and pain experiences in non-demented individuals with idiopathic Parkinson's disease.
• To compare pain severity and interference between PD patients with low executive function, low memory function, no cognitive deficits, and healthy controls.

Main Methods:

• A cohort of 113 non-demented individuals with idiopathic Parkinson's disease was categorized based on cognitive function: low executive function (n=24), low memory function (n=35), and no cognitive deficits (n=54).
• A comparison group of 64 matched non-Parkinson's disease controls was included.
• Pain severity and pain interference were assessed and compared across groups.

Main Results:

• Parkinson's disease participants with low executive function reported significantly higher pain interference compared to other PD phenotypes (p<0.05).
• No significant differences in pain severity were found between PD phenotypes.
• The association between low executive function and increased pain interference remained significant after controlling for anxiety and depression (p<0.05).

Conclusions:

• Elevated pain interference in Parkinson's disease patients with low executive function suggests a specific phenotype requiring targeted interventions.
• Psychosocial interventions may be particularly beneficial for individuals with Parkinson's disease experiencing both pain and executive function deficits.
• Further research into cognitive-behavioral strategies is warranted for managing pain in this population.