Reactive arthritis (Reiter's syndrome)

Area of Science:

• Rheumatology
• Infectious Diseases
• Immunogenetics

Background:

• Reactive arthritis (Reiter's syndrome) is the most prevalent inflammatory polyarthritis among young males.
• It can be an early indicator of human immunodeficiency virus (HIV) infection.
• A significant predisposing factor is the presence of the HLA-B27 genotype.

Purpose of the Study:

• To summarize the key aspects of reactive arthritis, including its causes, clinical presentation, and management.
• To highlight the association between reactive arthritis and specific infections and genetic factors.
• To emphasize the importance of considering reactive arthritis in the differential diagnosis of polyarthritis in young men.

Main Methods:

• Review of existing literature on reactive arthritis and Reiter's syndrome.
• Analysis of causative agents, including Chlamydia trachomatis and enteric pathogens.
• Examination of genetic associations, particularly HLA-B27.
• Evaluation of treatment strategies, including antibiotics and anti-inflammatory drugs.

Main Results:

• Genitourinary infections (e.g., Chlamydia trachomatis) are frequent triggers, while enteric infections (e.g., Salmonella, Shigella) are also implicated.
• Doxycycline may shorten the course of arthritis following genitourinary infections, but antibiotic efficacy for enteric-related cases is unproven.
• High-dose nonsteroidal anti-inflammatory drugs (NSAIDs) are the primary treatment; intra-articular corticosteroids can aid in cases with large-joint involvement.

Conclusions:

• Reactive arthritis is a significant cause of inflammatory polyarthritis in young men, often linked to infections and HLA-B27.
• Prompt diagnosis and appropriate treatment, primarily with NSAIDs, are crucial for managing symptoms and preventing long-term disability.
• The syndrome warrants consideration in young men presenting with polyarthritis, especially following infectious episodes.