ANNALS OF SAUDI MEDICINE, cilt.41, sa.4, ss.246-252, 2021 (SCI-Expanded, Scopus)
BACKGROUND: Fibromyalgia syndrome (FM) is a systemic disease of unknown etiology, which can cause widespread musculoskeletal pain. In patients with rheumatoid arthritis (RA), FM can cause an additional symptom burden, which can affect some variables on the RA disease activity score 28 (DAS28), a tool that evaluates 28 joints in RA patients.