Symptom-Based Treatment of Neuropathic Pain in Spinal Cord-Injured Patients: A Randomized Crossover Clinical Trial.

Abstract

OBJECTIVE:

The objective of this study was to identify the differences in medication effect according to pain characteristics in spinal cord-injured patients.

METHODS:

This study is a prospective, randomized, crossover study. Fifty-five patients and 66 locations of neuropathic pain were included. Pain was classified into four spontaneous characteristics and three evoked pain characteristics. Oxcarbazepine (Na channel blocker) and pregabalin (calcium channel α2-δ ligand medication) were tried. Patients were divided into two groups: evoked pain present and evoked pain absent. Overall average visual analog scale was obtained.

RESULTS:

Oxcarbazepine was significantly more effective for patients without evoked pain than in those with it for electrical, burning, and pricking pain. The effect of pregabalin was not different regarding the presence or absence of evoked pain for all pain categories, except burning pain. In patients with evoked pain, pregabalin was shown to be significantly more effective for electrical pain, allodynia, and heat hyperalgesia than oxcarbazepine. In the evoked pain absent group, oxcarbazepine showed greater improvement than pregabalin but was not significant.

CONCLUSIONS:

In summary, the phenotype of neuropathic pain was associated with the efficacy of different pharmacologic treatments. Symptom-based treatment, therefore, can lead to more efficient analgesia.

• Authors: Kyunghoon Min, Yoongul Oh, Sang-Hyuk Lee, Ju Seok Ryu
• Journal: American journal of physical medicine & rehabilitation (Am J Phys Med Rehabil) Vol. 95 Issue 5 Pg. 330-8 (May 2016) ISSN: 1537-7385 [Electronic] United States
• PMID: 26368836 (Publication Type: Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)

Chemical References

• Calcium Channel Blockers
• Voltage-Gated Sodium Channel Blockers
• Carbamazepine
• Pregabalin
• Oxcarbazepine

Topics

• Calcium Channel Blockers (therapeutic use)
• Carbamazepine (analogs & derivatives, therapeutic use)
• Cross-Over Studies
• Evoked Potentials (physiology)
• Female
• Humans
• Male
• Middle Aged
• Neuralgia (drug therapy, physiopathology)
• Oxcarbazepine
• Pregabalin (therapeutic use)
• Prospective Studies
• Spinal Cord Injuries (physiopathology)
• Visual Analog Scale
• Voltage-Gated Sodium Channel Blockers (therapeutic use)