PURPOSE: This study systematically reviewed the antalgic effects of non-invasive physical modalities (NIPMs) on central post-stroke pain (CPSP). SUBJECTS AND METHODS: Clinical studies were sought on September 2015 in 10 electronic databases, including Medline and Scopus. The searching strings were "central pain and stroke" and "treatment, and physical or non-pharmacological". The inclusion and exclusion criteria were set for screening the clinical articles by two reviewers. Pain scores on visual analog scale in an article were used as the outcome measure for resulting judgment. The NIPMs intervention summarized from the eligible articles was rated from levels A to C according to Evidence Classification Scheme for Therapeutic Interventions. RESULTS: Over 1,200 articles were identified in the initial searches and 85 studies were retrieved. Sixteen studies were eligible and judged. Caloric vestibular stimulation (n = 3), heterotopic noxious conditioning stimulation (n = 1), and transcutaneous electrical stimulation (n = 1) were rated below level C. Transcranial direct current stimulation (TDCS; n = 2) and transcranial magnetic stimulation (TMS; n = 9) were rated as level B. CONCLUSION: The findings suggest that TMS and TDCS were better than other treatments for CPSP relief but the studies were of insufficient quality.

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