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. 2023 Apr;26(4):727-739.
doi: 10.1111/1756-185X.14636. Epub 2023 Mar 5.

Pain in individuals with idiopathic inflammatory myopathies, other systemic autoimmune rheumatic diseases, and without rheumatic diseases: A report from the COVAD study

Samuel Katsuyuki Shinjo  1 , Minchul Kim  2 , Leonardo Santos Hoff  3 , Rafael Giovani Missé  1 , Parikshit Sen  4 , R Naveen  5 , Jessica Day  6   7   8 , Rafael Alves Cordeiro  1 , Jucier Gonçalves Júnior  1 , Tulika Chatterjee  2 , James B Lilleker  9   10 , Vishwesh Agarwal  11 , Sinan Kardes  12 , Marcin Milchert  13 , Tamer Gheita  14 , Babur Salim  15 , Tsvetelina Velikova  16 , Abraham Edgar Gracia-Ramos  17 , Ioannis Parodis  18   19 , Albert Selva O'Callaghan  20 , Elena Nikiphorou  21   22 , Ashima Makol  23 , Ai Lyn Tan  24   25 , Lorenzo Cavagna  26 , Miguel A Saavedra  27 , Nelly Ziade  28   29 , Johannes Knitza  30 , Masataka Kuwana  31 , Arvind Nune  32 , Oliver Distler  33 , Hector Chinoy  9   34   35 , Vikas Agarwal  5 , Rohit Aggarwal  36 , Latika Gupta  9   37   38 ; COVAD Study Group
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Free article

Pain in individuals with idiopathic inflammatory myopathies, other systemic autoimmune rheumatic diseases, and without rheumatic diseases: A report from the COVAD study

Samuel Katsuyuki Shinjo et al. Int J Rheum Dis. 2023 Apr.
Free article

Abstract

Objectives: To compare pain intensity among individuals with idiopathic inflammatory myopathies (IIMs), other systemic autoimmune rheumatic diseases (AIRDs), and without rheumatic disease (wAIDs).

Methods: Data were collected from the COVID-19 Vaccination in Autoimmune Diseases (COVAD) study, an international cross-sectional online survey, from December 2020 to August 2021. Pain experienced in the preceding week was assessed using numeral rating scale (NRS). We performed a negative binomial regression analysis to assess pain in IIMs subtypes and whether demographics, disease activity, general health status, and physical function had an impact on pain scores.

Results: Of 6988 participants included, 15.1% had IIMs, 27.9% had other AIRDs, and 57.0% were wAIDs. The median pain NRS in patients with IIMs, other AIRDs, and wAIDs were 2.0 (interquartile range [IQR] = 1.0-5.0), 3.0 (IQR = 1.0-6.0), and 1.0 (IQR = 0-2.0), respectively (P < 0.001). Regression analysis adjusted for gender, age, and ethnicity revealed that overlap myositis and antisynthetase syndrome had the highest pain (NRS = 4.0, 95% CI = 3.5-4.5, and NRS = 3.6, 95% CI = 3.1-4.1, respectively). An additional association between pain and poor functional status was observed in all groups. Female gender was associated with higher pain scores in almost all scenarios. Increasing age was associated with higher pain NRS scores in some scenarios of disease activity, and Asian and Hispanic ethnicities had reduced pain scores in some functional status scenarios.

Conclusion: Patients with IIMs reported higher pain levels than wAIDs, but less than patients with other AIRDs. Pain is a disabling manifestation of IIMs and is associated with a poor functional status.

Keywords: autoimmune diseases; functional status; myositis; pain; rheumatic diseases.

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References

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