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Table 1 Peripheral and central quantitative sensory testing findings in fibromyalgia, osteoarthritis and rheumatoid arthritis

From: The role of the central nervous system in the generation and maintenance of chronic pain in rheumatoid arthritis, osteoarthritis and fibromyalgia

  Peripheral findings Central findings
  Low pain thresholds at affected sites Low pain thresholds in a widespread distribution Loss of descending analgesia (conditioned pain modulation) Temporal summation Expanded areas of hyperalgesia
Fibromyalgia X X X X X
Osteoarthritis X X X X X
Rheumatoid arthritis X X   X X