Effects of Non-Invasive Brain Stimulation on Clinical Pain Intensity and Experimental Pain Sensitivity Among Individuals with Central Post-Stroke Pain: A Systematic Review.

Published online

Journal Article (Review)

Purpose: Central post-stroke pain (CPSP) is a neuropathic disorder resulting in pain and disability. An emerging treatment for CPSP is non-invasive brain stimulation including direct current stimulation [tDCS] and repetitive transcranial magnetic stimulation [rTMS]. This systematic review analyzes the efficacy and quality of non-invasive brain stimulation intervention studies for CPSP. Methods: Studies were sought from three research databases published between 2007 and 2017. Studies were included if the sole intervention was non-invasive brain stimulation and the primary outcome either clinical or experimental pain intensity. Studies were qualitatively assessed for risk of bias. Results: Of 1107 articles extracted, six met eligibility criteria. Five studies found a decrease in pain intensity (p<0.05) immediately and 3 weeks after rTMS or tDCS was delivered over the primary motor cortex. For experimental pain, one study found thermal pain thresholds improved for those receiving tDCS compared to sham (p<0.05), while another found normalization of the cold detection threshold only after rTMS (p<0.05). Qualitative assessment revealed only one study rated as "excellent/good" quality, while the other five were rated as "fair" or "poor". Conclusion: Non-invasive brain stimulation may have a therapeutic effect on pain level for individuals with CPSP, as evidenced by significant decreases in clinical and experimental pain scores. However, despite the impact of CPSP and the promise of non-invasive brain stimulation, few rigorous studies have been performed in this area. Future studies should aim to standardize treatment parameters, measure both clinical and experimental pain, and include long-term follow-up.

Full Text

Duke Authors

Cited Authors

  • Ramger, BC; Bader, KA; Davies, SP; Stewart, DA; Ledbetter, LS; Simon, CB; Feld, JA

Published Date

  • 2019

Published In

Volume / Issue

  • 12 /

Start / End Page

  • 3319 - 3329

PubMed ID

  • 31853195

Pubmed Central ID

  • 31853195

International Standard Serial Number (ISSN)

  • 1178-7090

Digital Object Identifier (DOI)

  • 10.2147/JPR.S216081

Language

  • eng

Conference Location

  • New Zealand