TY - JOUR
T1 - Non-nociceptive pain in rheumatoid arthritis is frequent and affects disease activity estimation
T2 - cross-sectional data from the FRAME study
AU - Christensen, A W
AU - Rifbjerg-Madsen, Signe
AU - Christensen, R
AU - Dreyer, L
AU - Tillingsøe, H
AU - Seven, S
AU - Boesen, M
AU - Ellegaard, K
AU - Bliddal, H
AU - Danneskiold-Samsøe, B
AU - Amris, K
PY - 2016/11/1
Y1 - 2016/11/1
N2 - BACKGROUND: The painDETECT questionnaire (PDQ) is a mechanism-based pain classification tool assigning patients to one of three categories depending on the quality of the experienced pain. Patients with non-nociceptive pain score high on the PDQ. The objective was to assess the proportions of the three PDQ classification groups in patients with rheumatoid arthritis (RA) and to explore differences in clinical characteristics.METHOD: RA patients initiating or escalating their RA therapy were included prospectively and underwent a thorough examination programme. Low (PDQ score < 13), medium (PDQ score 13-18), and high (PDQ score > 18) scores indicate nociceptive, unclear/possible neuropathic, or neuropathic pain mechanisms, respectively.RESULTS: The 102 included patients were classified into the following PDQ classification groups: low = 65%, medium = 23%, and high = 12%. Patients in the medium and high PDQ groups scored worse on indicators of anxiety, depression, disability, mental health-related quality of life, pain, and fatigue. They also had more tender points and an RA disease activity score based on 28 joints (DAS28) where a higher fraction of the composite score pertained to non-inflammatory factors compared to patients in the low PDQ classification group. There were no differences in objective inflammatory indices across groups. Multiple regression analysis demonstrated that the tender joint count (TJC) and the 36-item Short Form Health Survey (SF36) mental component summary (MCS) score were independently associated with the PDQ score.CONCLUSIONS: In patients initiating or intensifying medical treatment for their RA, non-nociceptive pain (PDQ score ≥ 13) is common. In these patients, the pain mechanisms result in increased disease activity scores on a non-inflammatory basis.
AB - BACKGROUND: The painDETECT questionnaire (PDQ) is a mechanism-based pain classification tool assigning patients to one of three categories depending on the quality of the experienced pain. Patients with non-nociceptive pain score high on the PDQ. The objective was to assess the proportions of the three PDQ classification groups in patients with rheumatoid arthritis (RA) and to explore differences in clinical characteristics.METHOD: RA patients initiating or escalating their RA therapy were included prospectively and underwent a thorough examination programme. Low (PDQ score < 13), medium (PDQ score 13-18), and high (PDQ score > 18) scores indicate nociceptive, unclear/possible neuropathic, or neuropathic pain mechanisms, respectively.RESULTS: The 102 included patients were classified into the following PDQ classification groups: low = 65%, medium = 23%, and high = 12%. Patients in the medium and high PDQ groups scored worse on indicators of anxiety, depression, disability, mental health-related quality of life, pain, and fatigue. They also had more tender points and an RA disease activity score based on 28 joints (DAS28) where a higher fraction of the composite score pertained to non-inflammatory factors compared to patients in the low PDQ classification group. There were no differences in objective inflammatory indices across groups. Multiple regression analysis demonstrated that the tender joint count (TJC) and the 36-item Short Form Health Survey (SF36) mental component summary (MCS) score were independently associated with the PDQ score.CONCLUSIONS: In patients initiating or intensifying medical treatment for their RA, non-nociceptive pain (PDQ score ≥ 13) is common. In these patients, the pain mechanisms result in increased disease activity scores on a non-inflammatory basis.
KW - Adult
KW - Aged
KW - Arthritis, Rheumatoid
KW - Cross-Sectional Studies
KW - Female
KW - Humans
KW - Male
KW - Middle Aged
KW - Nociception
KW - Pain
KW - Pain Measurement
KW - Regression Analysis
KW - Severity of Illness Index
KW - Journal Article
U2 - 10.3109/03009742.2016.1139174
DO - 10.3109/03009742.2016.1139174
M3 - Journal article
C2 - 26987470
SN - 0300-9742
VL - 45
SP - 461
EP - 469
JO - Scandinavian Journal of Rheumatology
JF - Scandinavian Journal of Rheumatology
IS - 6
ER -