RT Journal Article SR Electronic T1 Effect of intramuscular depot betamethasone injection in patients with fibromyalgia and elevated C-reactive protein levels JF Journal of Investigative Medicine JO J Investig Med FD BMJ Publishing Group Ltd SP 1553 OP 1556 DO 10.1136/jim-2021-002293 VO 70 IS 7 A1 Nageb Dirawi A1 George Habib YR 2022 UL http://hw-f5-jim.highwire.org/content/70/7/1553.abstract AB Fibromyalgia is characterized by diffuse musculoskeletal pain and fatigue. There are limited data about systemic steroid treatment of patients with fibromyalgia in the English literature. Patients with fibromyalgia with ongoing diffuse musculoskeletal pain despite standard treatment, extreme fatigue and elevated C-reactive protein (CRP) levels without evidence of synovitis, or other source of inflammation, were asked to participate in our study. After consent, demographic, clinical and laboratory parameters in addition to body mass index were documented. These patients were interviewed and asked to answer the Revised Fibromyalgia Impact Questionnaire (FIQR) just prior, 1 and 4 weeks following 14 mg depot betamethasone intramuscular injection. Twenty-three patients were recruited and 21 completed the study. 19 patients were women with mean age of 42±10.12 and CRP level of 14.1±3.96 mg%, and all had negative rheumatoid factor and antinuclear antibodies. All patients had significant improvement in all of the FIQR parameters, at 1 and 4 weeks, except memory, anxiety and balance. It can be concluded that systemic intramuscular depot betamethasone injection seems to have a favorable effect in patients with fibromyalgia with elevated CRP levels for at least 4 weeks.