Abstract
Fibromyalgia (FM) is widespread and covers different age groups, most commonly occurring between 20 and 50 years. Patients with rheumatic diseases – osteoarthritis (OA) and systemic lupus erythematosus (SLE), have an accompanying/secondary FM. The presence of secondary fibromyalgia in SLE and OA has been investigated by various authors and is found in approximately 20% of these patients. The purpose of this clinical trial is to analyze correlations under clinical manifestations of primary vs. secondary FM. The present study is prospective and has been performed at the Clinic of Rheumatology of University Hospital “St. Ivan Rilski” and “Focus 5” Center, Sofia for the period September 2013 – September 2017. Eighty-three patients with primary FM, 39 patients with FM + OA, 23 patients with FM + SLE, 27 patients with SLE and 36 healthy subjects were included. The present study compared chronic pain, depression and anxiety in patients with primary FM, and patients with SLE, OA and secondary FM based on the 2016 criteria for fibromyalgia. The comparison between the patient groups is important for the evaluation of the disease activity and the treatment that will be recommended.
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