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Journal article

Predictors for severe persisting pain in rheumatoid arthritis are associated with pain origin and appraisal of pain

Abstract:

Objectives: To determine the proportion of rheumatoid arthritis (RA) patients with severe persisting pain and to identify predictive factors despite treatment-controlled disease activity.


Methods: This prospective multi-centre study included outpatients with RA scheduled for escalation of anti-inflammatory treatment due to active disease and severe pain (DAS28 > 3.2 and VAS > 50). At week 24, patients were stratified into reference group (DAS28 improvement > 1.2 or DAS28 ≤ 3.2 and VAS pain score < 50), non-responders (DAS28 improvement ≤ 1.2 and DAS28 > 3.2, regardless of VAS pain score), and persisting pain group (DAS28 improvement > 1.2 or DAS28 ≥ 3.2 and VAS pain score ≥ 50). The former two subgroups ended the study at week 24. The latter continued until week 48. Demographic data, DAS28-CRP, visual analogue scale for pain, painDETECT questionnaire (PD-Q) to identify neuropathic pain (NeP), and the Pain Catastrophizing Scale (PCS) were assessed and tested for relation to persisting pain.


Results: Of 567 patients, 337 (59.4%) were classified as reference group, 102 (18.0%) as nonresponders, and 128 (22.6%) as patients with persisting pain. 21 (8.8%) responders, 28 (35.0%) non-responders, and 27 (26.5%) persisting pain patients tested positive for NeP at week 24. Pain catastrophising (p=0.002) and number of tender joints (p=0.004) were positively associated with persisting pain at week 24. Baseline PD-Q was not related to subsequent persisting pain.


Conclusions: Persisting and non-nociceptive pain occur frequently in RA. Besides the potential involvement of NeP, pain catastrophising and a higher number of tender joints coincide with persisting pain.

Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1136/ard-2023-225414

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Publisher:
BMJ Publishing Group
Journal:
Annals of the Rheumatic Diseases More from this journal
Volume:
83
Issue:
10
Pages:
1381-1388
Publication date:
2024-05-30
Acceptance date:
2024-05-04
DOI:
EISSN:
1468-2060
ISSN:
0003-4967


Language:
English
Pubs id:
1997545
Local pid:
pubs:1997545
Deposit date:
2024-05-20

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