Reiter's syndrome and associated arthritides

Area of Science:

• Rheumatology
• Infectious Diseases
• Immunology

Background:

• Human immunodeficiency virus (HIV) infection is associated with several distinct arthritic syndromes.
• These include seronegative spondarthritis (e.g., Reiter's syndrome, psoriatic arthritis), undifferentiated arthritis, and arthralgias.
• The prevalence and exact relationship between HIV and arthritis remain unclear, though arthritis can occur at any stage of infection.

Purpose of the Study:

• To review the spectrum of arthritic syndromes in HIV-infected individuals.
• To discuss potential causes, including infections and the direct or indirect role of HIV.
• To evaluate current treatment approaches and their safety in this patient population.

Main Methods:

• Review of existing literature on HIV-associated arthritis.
• Analysis of reported cases and etiological factors.
• Discussion of clinical manifestations, immunopathology, and treatment outcomes.

Main Results:

• HIV-infected individuals can develop various arthritis types, some linked to HLA-B27, others without clear genetic markers.
• Bacterial infections (Shigella, Yersinia, Campylobacter) are implicated in a minority of cases; most lack identified infectious triggers.
• HIV has been isolated from joint fluid, suggesting a potential viral role. Synovial inflammation varies, and even seemingly normal joints show abnormalities in AIDS patients.
• Conventional treatments like intraarticular steroids are generally safe and effective, while methotrexate and azathioprine may worsen HIV disease.

Conclusions:

• Arthritis is a significant comorbidity in HIV infection, with diverse presentations and etiologies.
• While infections can trigger arthritis, HIV itself or its effects on the immune system likely contribute to joint disease.
• Careful management is crucial, avoiding immunosuppressants like methotrexate and azathioprine due to potential adverse effects on HIV progression.