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- Title
Botulinum toxin type A for neuropathic pain in patients with spinal cord injury.
- Authors
Han, Zee‐A; Song, Dae Heon; Oh, Hyun‐Mi; Chung, Myung Eun
- Abstract
<bold>Objective: </bold>To evaluate the analgesic effect of botulinum toxin type A (BTX-A) on patients with spinal cord injury-associated neuropathic pain.<bold>Methods: </bold>The effect of BTX-A on 40 patients with spinal cord injury-associated neuropathic pain was investigated using a randomized, double-blind, placebo-controlled design. A 1-time subcutaneous BTX-A (200U) injection was administered to the painful area. Visual analogue scale (VAS) scores (0-100mm), the Korean version of the short-form McGill Pain Questionnaire, and the World Health Organization WHOQOL-BREF quality of life assessment were evaluated prior to treatment and at 4 and 8 weeks after the injection.<bold>Results: </bold>At 4 and 8 weeks after injection, the VAS score for pain was significantly reduced by 18.6 ± 16.8 and 21.3 ± 26.8, respectively, in the BTX-A group, whereas it was reduced by 2.6 ± 14.6 and 0.3 ± 19.5, respectively, in the placebo group. The pain relief was associated with preservation of motor or sensory function below the neurological level of injury. Among the responders in the BTX-A group, 55% and 45% reported pain relief of 20% or greater at 4 and 8 weeks, respectively, after the injection, whereas only 15% and 10% of the responders in the placebo group reported a similar level of pain relief. Improvements in the score for the physical health domain of the WHOQOL-BREF in the BTX-A group showed a marginal trend toward significance (p = 0.0521) at 4 weeks after the injection.<bold>Interpretation: </bold>These results indicate that BTX-A may reduce intractable chronic neuropathic pain in patients with spinal cord injury.
- Subjects
BOTULINUM toxin; CHRONIC pain; COMPARATIVE studies; LONGITUDINAL method; RESEARCH methodology; MEDICAL cooperation; MUSCLE relaxants; NEURALGIA; HEALTH outcome assessment; QUESTIONNAIRES; RESEARCH; SPINAL cord injuries; EVALUATION research; MCGILL Pain Questionnaire; PAIN measurement; RANDOMIZED controlled trials; BLIND experiment; DISEASE complications; PHARMACODYNAMICS
- Publication
Annals of Neurology, 2016, Vol 79, Issue 4, p569
- ISSN
0364-5134
- Publication type
journal article
- DOI
10.1002/ana.24605