AI Article Synopsis

  • This study examined how central sensitization symptoms relate to pain perception in patients with chronic masticatory myofascial pain transitioning from acute to chronic stages.
  • Researchers tested 23 patients with myofascial pain and 22 healthy volunteers, measuring pain thresholds and central sensitization using various assessments.
  • Results indicated that patients with chronic pain had lower pain thresholds but no correlation between central sensitization scores and pain perception, suggesting that central sensitization might occur before visible symptoms appear.

Article Abstract

Purpose: This study explored the relationship between central sensitization symptoms, assessed using the Central Sensitization Inventory (CSI), and psychophysical factors in patients with chronic masticatory myofascial pain (MMP) transitioning from the acute to chronic stages.

Methods: In this study, 23 patients with MMP and 22 healthy volunteers were assessed using psychophysical tests, including measurements of pressure pain threshold (PPT) and temporal summation of pain (TSP). Additionally, CSI scores were recorded to evaluate central sensitization symptoms.

Results: Patients with chronic MMP showed significantly lower PPT in all masticatory muscles and extratrigeminal areas compared with controls. However, there was no significant correlation between CSI scores and psychophysical test results in patients with MMP.

Conclusion: The significant enhancement of TSP in patients with subchronic MMP suggests a potential role in the onset of myofascial pain. The main finding suggests that sub-chronic symptom patients show higher CSI scores despite no sensory testing changes, indicating that central sensitization possibly precedes observable symptoms.

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Source
http://dx.doi.org/10.2334/josnusd.24-0087DOI Listing

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