Behçet's disease.

Area of Science:

• Immunology
• Infectious Diseases
• Rheumatology

Background:

• Emerging evidence highlights the significant role of streptococci in the development of Behçet's disease.
• A high prevalence of prior streptococcal infections is observed in Behçet's disease patients.
• Streptococcal antigens can trigger both localized hypersensitivity and systemic exacerbations of Behçet's disease.

Purpose of the Study:

• To explore the immunological connection between streptococcal infections and Behçet's disease.
• To review recent advancements in the diagnosis and treatment of Behçet's disease.

Main Methods:

• Analysis of patient histories for streptococcal infections.
• Evaluation of immune responses to streptococcal antigens in Behçet's disease patients.
• Review of diagnostic imaging techniques (MRI, PET) and therapeutic trials (cyclosporin, colchicine).

Main Results:

• Streptococcal antigens induce delayed-type hypersensitivity and systemic Behçet's disease attacks.
• Neutrophil-activating lymphokines are produced upon reaction of streptococcal antigen with lymphocytes from Behçet's disease patients.
• New international diagnostic criteria and advanced imaging methods aid in diagnosing Behçet's disease, particularly neuro-Behçet's disease.
• Cyclosporin demonstrates efficacy for ocular manifestations in a clinical trial.

Conclusions:

• Streptococci are implicated in the etiology of Behçet's disease.
• Advances in diagnostics and therapeutics offer improved management strategies for Behçet's disease.