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Subcutaneous Trigeminal Nerve Field Stimulation for Refractory Facial Pain
Published on: May 10, 2017
Hypothalamic deep-brain stimulation modulates thermal sensitivity and pain thresholds in cluster headache
Tim P Jürgens1, Massimo Leone, Alberto Proietti-Cecchini
1Department of Systems Neuroscience, University of Hamburg, Germany. t.juergens@uke.de
Pain
|August 15, 2009
Summary
Deep-brain stimulation (DBS) of the posterior hypothalamus effectively treats chronic cluster headache. This study found DBS specifically alters cold pain perception in the affected facial area, suggesting a targeted mechanism for pain relief.
Area of Science:
- Neuroscience
- Pain Medicine
- Neurosurgery
Background:
- Deep-brain stimulation (DBS) of the posterior hypothalamus is effective for chronic cluster headache.
- The precise mechanism of action for hypothalamic DBS in cluster headache remains unclear.
- The hypothalamus connects to the trigeminal system, suggesting a potential pathway for pain modulation.
Purpose of the Study:
- To investigate whether posterior hypothalamic DBS affects thermal sensation and pain perception in specific or multiple body regions.
- To compare sensory perception in patients with DBS, patients without DBS, and healthy controls.
Main Methods:
- Three groups were studied: chronic cluster headache patients with unilateral DBS (n=11), chronic cluster headache patients without DBS (n=15), and healthy controls (n=29).
- Thermal perception and pain thresholds for hot and cold stimuli were assessed bilaterally in the supraorbital, forearm, and lower leg regions.
- In DBS patients, thresholds were measured with the stimulator both active and inactive.
Main Results:
- Cold pain thresholds in the first trigeminal branch (supraorbital region) were significantly increased on the stimulated side in the DBS group compared to healthy subjects (p = .015).
- The DBS group exhibited higher cold detection thresholds compared to non-implanted cluster headache patients (p < .05).
- No significant changes in thresholds were observed upon short-term stimulation interruption in DBS patients, nor were clinically relevant differences found between non-stimulated cluster headache patients and controls.
Conclusions:
- Posterior hypothalamic DBS appears to specifically modulate pain sensation related to cluster headache.
- The observed effects on cold pain perception in the trigeminal area suggest a targeted neurophysiological mechanism.
- These findings support the specificity of hypothalamic neurostimulation for cluster headache treatment, impacting particular aspects of sensory processing.
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