Current Issue
This issue of Rheumatology (Bulgaria) marks a transformative milestone as the journal completes its transition to a fully digital format, supported by a modernized publishing platform and enhanced editorial infrastructure. In the leading editorial, the new Editor-in-Chief outlines a commitment to transparency, professional ethics, and rigorous peer-review standards aimed at elevating the journal’s international standing.
The scientific content features original research on the clinical outcomes of transitioning to biosimilar therapies in axial spondyloarthritis, alongside investigations into the genetic links between mood disorders and chronic pain. Readers will also find comprehensive reviews on the diagnostic challenges of IgG4-related disease and diverse case reports covering rare conditions such as post-SARS-CoV-2 eosinophilic fasciitis. By integrating clinical practice with academic excellence, this issue reaffirms the journal's dedication to serving the Bulgarian rheumatology community while expanding its reach to the global scientific audience.
Announcements
Transition to Gold Open Access Model and Introduction of Article Processing Charges (APC)
The Editorial Board of Rheumatology (Bulgaria) announces a revision of the journal’s publication and financial model, effective 1 August 2026. From this date, the journal will operate under a structured Gold Open Access model.
To support editorial management, technical maintenance, DOI registration, indexing, archiving, and online publication, an Article Processing Charge (APC) of EUR 100 will apply to accepted manuscripts submitted on or after 1 August 2026.
The following article types will remain free of charge: invited Editorials, invited Reviews, Letters to the Editor commissioned by the Editorial Office, and other manuscripts specifically commissioned by the Editorial Office.
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Open Access Policy and Author Requirements
Rheumatology (Bulgaria) operates under a fully Open Access model. All articles are published under the Creative Commons Attribution 4.0 International (CC BY 4.0) license.
All submissions must be prepared in English, including the full text and metadata. A Bulgarian abstract with keywords may be present.
The journal adheres to international standards of publication ethics and transparent editorial practice.
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Articles in Press Now Available
Rheumatology (Bulgaria) has introduced an Articles in Press publication model.
Accepted manuscripts are now published online immediately after final editorial approval and production, prior to assignment to a specific issue. Each article receives a permanent DOI upon publication and is fully citable.
This model ensures rapid dissemination of clinically relevant and scientifically robust research in rheumatology and related fields.
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Editorial
Articles
Reviews
Case Reports
Rheumatology (Bulgaria) is a peer-reviewed, Gold Open Access journal owned by the Bulgarian Society for Rheumatology. Manuscripts submitted after August 1, 2026, that are accepted for publication are subject to an Article Processing Charge (APC). All published content is made available fully and immediately upon publication, ensuring unrestricted global access for all readers.
Indexing: Scopus; EMBASE (Excerpta Medica); Google Scholar; CrossRef; Central Medical Library – Bulgaria; Bulgarian Medical Literature Database; Open Ukrainian Citation Index (OUCI).
ISSN: Online 2738-831X · Print 1310-0505