Rheumatoid Arthritis DDx & Criteria

Differential Diagnosis

• Seronegative Spondyloarthropathies
  • Ankylosing spondylitis
  • Psoriatic
  • Enteropathic
  • Reiters
• Crystal Arthropathies
  • Gout
  • CPPD
  • HADD
• Connective Tissue Diseases
  • JRA
  • SLE
• Septic arthritis
• Polymyalgia Rheumatica
• Sarcoidosis

Diagnostic Criteria

• 1987 American College of Rheumatology
• Need 4/7 criteria in disease of 6/52 or longer
• ‘MAAARRR’
  • Morning stiffness > 1 hour
  • Symmetrical arthritis > 6/52
  • Arthritis affecting 3 joints or more for > 6/52
  • Arthritis of hand for > 6/52
  • Rheumatoid nodules
  • Rheumatoid factor positive
  • Radiological changes