Inclusion Criteria:  Patients with well-defined ARDs (rheumatoid arthritis, sclerosis systemic, Sjögren syndrome, spondyloarthritis, systemic lupus erythematosus, systemic vasculitis, and systemic autoimmune myopathies) Fatigue or general pains.  Exclusion Criteria:  Neoplasia, using heart pacemarker, using visceral metalic clips, infections (HIV, HTLV-1, hepatitis), pregnance, previous historical of convulsions or epilepsies