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Published on: February 25, 2022

[Arthritis and infections]

R Cimaz1, E Meregalli, M Biggioggero

  • 1Clinica Pediatrica De Marchi, ICP, Milan. rolando.cimaz@unimi.it

Minerva Pediatrica
|September 21, 2005
PubMed

Insights

Infectious agents can cause arthritis through direct joint invasion or immune responses. Investigating preceding infections is crucial for diagnosing and managing various forms of infectious and postinfectious arthritis.

Area of Science:

  • Rheumatology
  • Infectious Diseases
  • Pediatric Rheumatology

Context:

  • Infectious agents can lead to arthritis via direct joint invasion or immune-mediated mechanisms.
  • Septic arthritis involves bacteria in synovial fluid, complicating infections like meningococcemia.
  • Reactive (postinfectious) arthritides are significant in pediatric rheumatology, often following enteric or viral infections.

Purpose:

  • To explore the diverse causes and presentations of infectious and postinfectious arthritis.
  • To highlight the diagnostic importance of preceding infections in acute arthritis cases.
  • To differentiate between self-limiting postinfectious arthritides and those with significant morbidity.

Summary:

  • Arthritis can arise from direct bacterial invasion (septic arthritis) or immune responses to infections (reactive arthritides).
  • Common causes include bacteria (Neisseria gonorrhoeae, Haemophilus influenzae) and viruses (Parvovirus B19, rubella).
  • Postinfectious arthritis typically presents 1-2 weeks after enteric infections (Yersinia, Salmonella) or viral illnesses, often oligoarticular.

Impact:

  • Early investigation of preceding infections is vital for accurate diagnosis of acute arthritis.
  • While many cases are self-limiting, conditions like Lyme borreliosis and rheumatic fever require specific management due to potential severity.
  • Understanding infectious triggers aids in managing pediatric rheumatologic conditions.

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