Pyrexia of Unknown Origin

Question 1

List some causes of pyrexia of unknown origin

Answer 1

• “Infections Can Make Undergraduates Die”
• Infections (40%)
  
  • TB
  • IE
  • EBV
  • CMV
• Connective tissue disorders (20%)
  
  • RA
  • SLE
  • Adult-onset Still’s disease
  • Temporal arteritis
• Malignancy (20%)
  
  • Lymphoma
  • Leukaemia
  • HCC
• Undiagnosed (20%)
• Drugs
  
  • Phenytoin
  • Others