| Summary: | Background: Higher prevalence of fibromyalgia (FM) among chronic hepatitis-C virus (HCV) suspects virally-mediated pathway. Aim of the work: To determine the frequency and clinical characteristics of FM in Egyptian patients with chronic HCV and to evaluate its relationship to viral load. Patients and methods: 150 Egyptian patients with chronic HCV and 150 controls were included. Liver function tests, thyroid stimulating hormone (TSH), HCV antibodies, HCV-ribonucleic acid (RNA) and abdominal ultrasonography were done. FM was diagnosed according to 2010 American College of Rheumatology (ACR) classification criteria. Results: The mean age of the patients was 54.1 ± 8.4 years and they were 94 females: 56 males; and the mean duration of HCV was 6.9 ± 3.2 years. Fatigue, arthralgia, arthritis, morning stiffness, weakness, sicca-like symptoms, depression, cognitive, sleep disturbances and irritable bowel syndrome (IBS) were significantly more frequent in HCV patients. Twenty six patients with HCV (17.3%) and 4 (2.7%) of the controls had FM. HCV patients with FM had significantly higher widespread pain index, symptom severity score, visual analogue scale (VAS), tender points count and stiffness than controls with FM. HCV patients with FM had significant higher VAS score, fatigue and depression than without FM. Rates of hematological features, autoantibodies, liver enzymes, abdominal US findings, patients with viral load > 800,000 IU/L were comparable. Conclusion: There is increased rate of fibromyalgia in chronic HCV patients and is associated with higher pain intensity, tender point count, symptom severity and fatigue. FM in patients with HCV infection is not related to viral load of HCV.
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