ReviewDermatopathology (Basel, Switzerland)2026
Behçet-like Syndromes: A Comprehensive Review.
Review in Dermatopathology (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundBehçet-like syndrome (BLS) refers to the presence of Behçet's disease (BD) features occurring in association with distinct clinical-pathological conditions such as inborn errors of immunity, myeloproliferative disorders, infections, or drug exposure. BLS may differ clinically from BD and is increasingly recognized as a separate entity. Distinguishing BLS from primary BD is essential for appropriate management, and studying BLS may provide insights into BD pathogenesis.
objectivesTo summarize clinical features, treatments, and genetic abnormalities reported in BLS, we reviewed all published cases up to January 2024.
methodsA systematic search of PubMed, Scopus, and Embase was performed using the terms "Behçet-like syndrome", "Behçet-like disease", and "Pseudo-Behçet disease". We included English-language reports of patients > 12 years old with a defined underlying etiology and Behçet-like manifestations, defined by ≥2 ICBD criteria and/or gastrointestinal involvement, mucosal ulcers, thrombosis, or non-recurrent disease. Epidemiological, clinical, laboratory, histological, and treatment data were extracted and analyzed descriptively.
resultsOf 679 publications, 53 met inclusion criteria, comprising 100 patients with BLS. The median age was 44 years (IQR 22-52), with a female predominance (1:2). Fifty-three percent were from non-European countries. A genetic disorder was identified in 70% of cases, while HLA-B51 was present in 10%. Frequent manifestations included skin lesions (68%), fever (56%), intestinal involvement (43%), and joint symptoms (43%). Treatments included glucocorticoids (65%), conventional DMARDs (32%), and biologics (22%), mainly anti-TNF agents. Antiviral/antibiotic therapy was used in 9% and chemotherapy in 15%. Two patients with trisomy-8 MDS underwent allogeneic stem cell transplantation.
conclusionsDiverse conditions-including monogenic diseases, immune defects, myeloproliferative disorders, infections, and drug-related reactions-can produce Behçet-like features. Our findings highlight differences in clinical expression and treatment response across BLS etiologies. Recognizing BLS is essential for appropriate management and may contribute to a deeper understanding of BD pathogenesis and future targeted therapies.
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