Serum Biomarkers and Their Clinical Correlates in Traumatic Trigeminal Neuropathy: A Pilot Study

Area of Science:

• Neurology
• Biochemistry
• Pain Medicine

Background:

• Painful post-traumatic trigeminal neuropathy (PPTTN) presents a complex challenge in pain management.
• Understanding the biological underpinnings and progression markers of PPTTN is crucial for effective treatment strategies.

Purpose of the Study:

• To investigate serum biomarker levels in PPTTN patients.
• To explore associations between biomarkers and clinical/psychological patient characteristics.

Main Methods:

• Serum cytokine and neurotrophic factor levels were measured in 32 PPTTN patients.
• Clinical (pain severity, interference, numbness, duration) and psychological factors were assessed using validated questionnaires.

Main Results:

• Interleukin-8 (IL-8) and brain-derived neurotrophic factor (BDNF) levels were higher in patients with symptom duration exceeding 6 months.
• No significant biomarker differences were found based on age, sex, pain severity, or nerve injury type.
• Pain outcomes showed stronger associations with psychological factors than with serum biomarkers.

Conclusions:

• IL-8 and BDNF may serve as biomarkers for PPTTN disease progression, particularly concerning symptom duration.
• Pain management in PPTTN should consider the significant impact of psychological factors alongside biological markers.
• Psychological support is essential for managing PPTTN outcomes.