Vol. 34 No. 2 (2026): Volume 34, Issue 2, Apr - Jun, 2026
Volume 34, Issue 2, Apr - Jun, 2026

Volume 34, Issue 2 of Rheumatology (Bulgaria) presents a clinically focused and thematically balanced collection of articles covering original research, narrative reviews, and rare case-based diagnostic challenges in contemporary rheumatology. The issue includes an original study on the endocrine and metabolic profile of women with rheumatoid arthritis, review articles addressing the interpretation of antinuclear antibodies, synovial fluid crystal analysis, oxidative stress biomarkers in fibromyalgia, and the relationship between capillaroscopic findings and autoantibody profiles in systemic sclerosis, as well as case reports discussing complex overlaps between psoriatic arthritis and inflammatory myopathy, rheumatoid arthritis and granulomatosis with polyangiitis, and polyarteritis nodosa and antiphospholipid vasculopathy. Overall, the issue emphasizes precise differential diagnosis, careful interpretation of laboratory and imaging biomarkers, and the need for continuous clinical reassessment in atypical, overlapping, or treatment-refractory rheumatological presentations.

Reviews

Bogdan Penev (Author)
115-131
Are Antinuclear Antibodies Always Pathological? Insights from Population Data
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Vassilia Terzieva, Mariana Ivanova, Georgi Kotov (Author)
132-155
Crystals in Synovial Fluid: Diagnostic Methods and Clinical Relevance
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Gergana Miteva-Ilieva, Mariela Geneva-Popova, Ivan Yanakiev, Ivaylo Sokolov, Krasimir Kraev, Vesela Hristeva, Sanie Dzhambazova, Stanislava Popova-Belova (Author)
156-177
Biomarkers of Oxidative Stress in Fibromyalgia and Their Diagnostic Implications
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Sanie Dzhambazova, Sevdalina Lambova (Author)
178-197
Аssociation of Capillaroscopic Findings with Autoantibodies in Systemic Sclerosis
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Case Reports

Krasimir Kraev, Vesela Hristeva, Ivaylo Sokolov, Gergana Miteva-Ilieva, Stanislava Popova-Belova, Ivan Yanakiev, Sanie Dzhambazova, Maria Uchikova, Yordanka Basheva-Kraeva, Mariela Geneva-Popova (Author)
198-211
Not Everything Is Psoriasis
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Anubhav Bansal, Deepak Jain, Bharti Yadav (Author)
212-219
Association of Granulomatosis with Polyangiitis and Rheumatoid Arthritis: A Rare Overlap Syndrome
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Ivan Yanakiev, Mariela Geneva - Popova, Stanislava Popova-Belova, Krasimir Kraev, Vesela Hristeva, Ivaylo Sokolov, Sanie Dzhambazova, Gergana Miteva-Ilieva (Author)
220-229
Antiphospholipid Vasculopathy or Polyarteritis Nodosa – Case of „Both“ or „Either“
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