Comparative Analysis of Centrally Mediated and Inflammatory Pain Experiences Amongst Patients Diagnosed with Rheumatoid Arthritis: A Multimethods Study

Overview

Journal Health Expect

Publisher Wiley

Specialty Public Health

Date 2024 Jun 5

PMID 38838095

Authors

Zoe Rutter-Locher

Tom Esterine

Ruth Williams

Leonie S Taams

Kirsty Bannister

Bruce W Kirkham

Heidi Lempp

Affiliations

Soon will be listed here.

Abstract

Background: The identification of pain originating from distinct biological processes may lead to individualised pain treatment. In this study, we aimed to explore the pain experiences of patients with rheumatoid arthritis (RA), differentiating between those predominantly exhibiting features of peripheral inflammatory versus centrally mediated pain.

Methods: Through a multimethods approach we (i) quantitatively analysed the differences in pain descriptors between patients diagnosed with RA experiencing peripheral inflammatory and centrally mediated pain, utilising the Short Form-McGill Pain Questionnaire which includes the pain visual analogue scale (VAS) and (ii) qualitatively explored their subjective pain experiences grounded in the biopsychosocial model, commonly applied in chronic pain.

Results: Participants with centrally mediated pain reported higher pain scores on the VAS, used a wider range of pain descriptors, and a higher proportion selected each descriptor compared to those with inflammatory pain (p < .001). The qualitative analysis revealed the centrally mediated pain group's experiences were overwhelming and relentless, struggling to precisely articulate the nature of their pain. In contrast, individuals with inflammatory pain expressed their pain in more tangible terms and shared their adaptive and coping strategies. Importantly, both groups revealed the substantial psychological, functional and social impacts of their pain, highlighting the often 'invisible' and misunderstood nature of their symptoms.

Conclusion: This study has gained a deeper insight into the pain experiences of patients living with RA, particularly in differentiating between centrally mediated and inflammatory types of pain, potentially facilitating a more individualised approach to pain treatment.

Patient Contribution: Patients actively participated in the study conception and design. This engagement includes collaboration with key stakeholders, such as members of the National Rheumatoid Arthritis Society and Patient Research Partners (PRPs), who provided continuous feedback and guidance throughout the research process. Specifically, the qualitative element was coproduced with two PRPs, who were involved in co-leading the focus groups and data analysis.

Citing Articles

An interdisciplinary perspective on peripheral drivers of pain in rheumatoid arthritis.

Rutter-Locher Z, Kirkham B, Bannister K, Bennett D, Buckley C, Taams L Nat Rev Rheumatol. 2024; 20(11):671-682.

PMID: 39242949 DOI: 10.1038/s41584-024-01155-z.

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