Multimodal investigation of neuropathic pain mechanisms in focal spinal lesions - PubMed
5 hours ago
- #Multimodal Imaging
- #Spinal Cord Lesions
- #Neuropathic Pain
- This study investigates neuropathic pain mechanisms in focal spinal cord lesions, particularly in non-traumatic cervical myelopathies.
- It assesses structural damage via MRI in specific spinal cord regions (spinothalamic tract, dorsal columns, etc.) and functional integrity using contact heat-evoked potentials (CHEPs).
- Results show no significant difference in structural damage between individuals with and without neuropathic pain, but functional preservation of the spinothalamic system was higher in those with pain (87% vs 38%).
- Mechanical hyperalgesia was observed in both groups through quantitative sensory testing (QST).
- The findings suggest that segmental hyperexcitability combined with residual spinothalamic afferent sparing may drive central neuropathic pain in focal spinal lesions.