Objectives: Currently, no studies have assessed the efficacy of transcranial direct current stimulation (tDCS) to treat fatigue and pain associated with or potentiated by post-COVID-19 syndrome in patients with systemic autoimmune rheumatic diseases (SARDs). Methods: This study included nine patients with different types of SARDs. All patients had previously confirmed RT-PCR test for COVID-19 as well as significant, persistent fatigue and pain that began to worsen after infection. Anodal tDCS was administered in five daily sessions (2mA, 20 minutes) over the C3 or C4 10/20 EEG positions, with the cathode placed at Fp1 or Fp2. Concomitantly, patients were involved in an aerobic exercise program by treadmill walking. All participants were evaluated using specific questionnaires and strength assessment by handgrip and physical function by timed-up-and go test and sit-to-stand test at baseline (within one week before tDCS protocol), and one week after tDCS protocol. During all procedures, the patients’ treatments remained unchanged. Results: The sample was composed of eight women and one man with a mean age of 48.7±9.6. After the tDCS protocol, the pain and fatigue significantly improved by a visual analog scale (P<0.05). The physical function also improved 9.5±2.7 vs. 6.8±0.8 (P=0.001) for timed-up-go-test and 10.3±3.7 vs. 15.1±4.0 (P=0.037) for sit-to-stand test. No subject experienced adverse events. One-hundred percent of patients adhered to all protocols. Conclusions: The present study showed tDCS in combination with aerobic exercise was effective in improving the physical function, and reducing fatigue/pain in SARDs patients with post-COVID-19 syndrome.Clinical Trials: NCT04890483.
BACKGROUNDCurrently, no studies have evaluated the safety and efficacy of transcranial direct current stimulation (tDCS) in systemic autoimmune rheumatic disease patients with fatigue and pain-associated with post-COVID-19 syndrome.
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