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The Adaptive, Pain Sensitive, and Global Symptoms Clusters: Evidence from a Patient-Based Study.

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  • 1Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, Canada.

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Summary

Painful temporomandibular disorders (pTMDs) can be categorized into three symptom clusters. The pain-sensitive cluster shows more orofacial pain, while the global symptoms cluster indicates higher psychological distress and persistent pain.

Keywords:
cluster analysiscross-sectional studiesfacial painodds ratiotertiary care

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Area of Science:

  • Pain research
  • Temporomandibular joint disorders
  • Epidemiology

Background:

  • Painful temporomandibular disorders (pTMDs) are complex conditions.
  • Previous research identified three symptom clusters: adaptive, pain sensitive, and global symptoms.
  • Personalizing pain care requires understanding these distinct patient profiles.

Purpose of the Study:

  • To compare clinical and psychological characteristics of patients seeking care for pTMDs across three identified symptom clusters.
  • To validate the clinical relevance of the adaptive, pain sensitive, and global symptoms clusters in a care-seeking population.

Main Methods:

  • Cross-sectional study utilizing medical records of 131 patients diagnosed with pTMDs (myalgia).
  • Data included orofacial, pain-related, dental, and psychological measures.
  • The Rapid OPPERA Algorithm was used for cluster assignment; multinomial regression analyzed associations.

Main Results:

  • The pain sensitive (PS) cluster showed more sites with palpation-evoked pain in temporomandibular joints and masticatory/cervical muscles.
  • The global symptoms (GS) cluster exhibited higher pain catastrophizing and perceived stress scores.
  • The GS cluster was more likely to report persistent pain of higher impact.

Conclusions:

  • Patients with pTMDs seeking care can be classified into three distinct symptom clusters.
  • The PS cluster is characterized by orofacial pain sensitivity without psychological comorbidities.
  • The GS cluster presents with a poorer psychological profile, suggesting a need for multidisciplinary treatment.