Frequency of fibromyalgia syndrome and anxiety post-corona virus disease-2019 (COVID-19) in patients attending the rheumatology clinic

Aim of the work

To screen for the new development of fibromyalgia syndrome (FMS) and anxiety in rheumatic diseases (RDs) patients and control who recovered from coronavirus disease 2019 (COVID-19).

Patients and methods

The study included 200 RDs patients and 100 matched controls with no previous history of FMS and who recovered from COVID-19. The patients’ RDs included rheumatoid arthritis (RA) (n = 50), systemic lupus erythematosus (SLE) (n = 50), juvenile idiopathic arthritis (JIA) (n = 40) and spondyloarthritis (SpA) (n = 60). The fibromyalgia symptom scale (FS), fibromyalgia impact questionnaire (FIQ) and Hamilton Anxiety rating scale were assessed.

Results

The mean age of patients was 35.9 ± 8.5 years with female: male 2.6:1. Fibromyalgia and anxiety were significantly higher in cases than control (22.5 % vs 12 % and 27 % vs16 %, p = 0.002, p = 0.03 respectively). Hypertension, obesity, anxiety, severe COVID-19, frequency of SLE and SpA were significantly higher in patients with FMS compared to those without (31.1 % vs 11.6 %, 68.9 % vs 21.9 %, 84.4 % vs 10.3 %, 48.9 % vs 16.8 %, 31.1 % vs 23.2 % and 40 % vs 27.1; p = 0.002, p < 0.001, p < 0.001, p < 0.001, p = 0.014, p = 0.004 respectively).Severity of COVID-19, diabetes and anxiety were significant predictors of FMS(β = 1.1, p = 0.007; β = 3.03, p = 0.001 and β = 4.44, p < 0.001 respectively). Fibromyalgia increases with increase anxiety grade; the percentage of fibromyalgia was 4.7 %, 50 %, 90 % and 100 % among patients with no anxiety, mild, moderate, and severe anxiety respectively (p < 0.001).

Conclusion

Fibromyalgia is common in RDs patients post-COVID-19. Diabetes, COVID-19 infection severity and anxiety predict the risk of developing post-COVID-19 fibromyalgia. Post-COVID-19 fibromyalgia occurred more in hypertensive, obese, anxious and patients with severe COVID infection.