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A four-year-old boy with fever, rash, and arthritis

Erin F D Mathes1, Amy E Gilliam

  • 1Departments of Dermatology and Pediatrics, University of California, San Francisco, CA 94143-0316, USA.

Seminars in Cutaneous Medicine and Surgery
|December 12, 2007
PubMed

Insights

Fever, rash, and arthritis in children often indicate inflammatory or infectious causes like Kawasaki disease. Distinguishing these requires analyzing rash characteristics, symptoms, and lab findings for accurate diagnosis and management.

Area of Science:

  • Pediatric Rheumatology
  • Pediatric Infectious Diseases
  • Pediatric Immunology

Background:

  • The triad of fever, rash, and arthritis in hospitalized children warrants a broad differential diagnosis.
  • While infections and postinfectious processes are common, inflammatory conditions and malignancy must be considered.

Observation:

  • Common causes include Kawasaki disease, Henoch-Schönlein Purpura, serum sickness-like reaction, and juvenile idiopathic arthritis.
  • Rarer causes encompass autoinflammatory disorders (e.g., Cryopyrin-related diseases), urticarial vasculitis, and systemic lupus erythematosus.

Findings:

  • Differential diagnosis focuses on distinguishing features of the rash, associated symptoms, and disease course.
  • Laboratory and histological findings are crucial for identifying specific inflammatory conditions.

Implications:

  • Accurate differentiation is key for appropriate inpatient management of pediatric inflammatory diseases.
  • Understanding these presentations aids in timely diagnosis and treatment, improving patient outcomes.

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