• Pain Pract · Jul 2012

    Case Reports

    Modulation of somatosensory profiles by spinal cord stimulation in primary Raynaud's syndrome.

    • Tino Münster, Nils Tiebel, Hendrikus Seyer, and Christian Maihöfner.
    • Department of Anesthesiology, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany. muenster@kfa.imed.uni-erlangen.de
    • Pain Pract. 2012 Jul 1;12(6):469-75.

    Background And Goal Spinal cord stimulation (SCS) is an effective antinociceptive treatment for various neuropathic pain syndromes. Apart from antinociceptive action, it may modulate overall somatosensory perception. This case report targets the question of whether SCS may alter quantitative sensory testing (QST) in a patient with primary Raynaud's syndrome.Materials And Methods We report on a 44-year-old female patient with primary Raynaud's syndrome who had SCS via cervical and lumbar electrodes. QST was performed in a standardized manner assessing cold detection threshold (CDT) and warm detection threshold (WDT), cold pain threshold (CPT) and heat pain threshold (HPT), mechanical detection threshold (MDT) and mechanical pain threshold (MPT) thresholds, and vibration detection threshold (VDT) and pressure pain thresholds (PPT). We tested at the dorsum of the right/left hand of the patient with engaged and disengaged SCS. Test results were compared with a control group of 80 subjects.Results Without SCS, the patient showed a sensory decrease in CDT, MDT, MPT, and VDT. SCS influenced the perception of cold, warm, and tactile detection thresholds, whereby CDT, WDT, and VDT were impaired and MDT was improved.Conclusion SCS significantly modulated the somatosensory profile in a patient with primary Raynaud's syndrome. These effects were pronounced in qualities involving Aβ, C, and A∂ nerve fibers. Further investigations may help to understand the mechanisms of action of SCS.© 2012 The Authors. Pain Practice © 2012 World Institute of Pain.

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