Dataset Information

Systematic review of topical capsaicin for the treatment of chronic pain.

ABSTRACT:

Objective

To determine the efficacy and safety of topically applied capsaicin for chronic pain from neuropathic or musculoskeletal disorders.

Data sources

Cochrane Library, Medline, Embase, PubMed, an in-house database, and contact with manufacturers of topical capsaicin.

Study selection

Randomised controlled trials comparing topically applied capsaicin with placebo or another treatment in adults with chronic pain.

Data extraction

Primary outcome was dichotomous information for the number of patients with about a 50% reduction in pain. Outcomes were extracted at four weeks for musculoskeletal conditions and eight weeks for neuropathic conditions. Secondary outcomes were adverse events and withdrawals due to adverse events.

Data synthesis

Six double blind placebo controlled trials (656 patients) were pooled for analysis of neuropathic conditions. The relative benefit from topical capsaicin 0.075% compared with placebo was 1.4 (95% confidence interval 1.2 to 1.7) and the number needed to treat was 5.7 (4.0 to 10.0). Three double blind placebo controlled trials (368 patients) were pooled for analysis of musculoskeletal conditions. The relative benefit from topical capsaicin 0.025% or plaster compared with placebo was 1.5 (1.1 to 2.0) and the number needed to treat was 8.1 (4.6 to 34). Around one third of patients experienced local adverse events with capsaicin, which would not have been the case with placebo.

Conclusions

Although topically applied capsaicin has moderate to poor efficacy in the treatment of chronic musculoskeletal or neuropathic pain, it may be useful as an adjunct or sole therapy for a small number of patients who are unresponsive to, or intolerant of, other treatments.

SUBMITTER: Mason L

PROVIDER: S-EPMC404499 | biostudies-literature | 2004 Apr

REPOSITORIES: biostudies-literature

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Publications

Systematic review of topical capsaicin for the treatment of chronic pain.

Mason Lorna L Moore R Andrew RA Derry Sheena S Edwards Jayne E JE McQuay Henry J HJ

BMJ (Clinical research ed.) 20040319 7446

<h4>Objective</h4>To determine the efficacy and safety of topically applied capsaicin for chronic pain from neuropathic or musculoskeletal disorders.<h4>Data sources</h4>Cochrane Library, Medline, Embase, PubMed, an in-house database, and contact with manufacturers of topical capsaicin.<h4>Study selection</h4>Randomised controlled trials comparing topically applied capsaicin with placebo or another treatment in adults with chronic pain.<h4>Data extraction</h4>Primary outcome was dichotomous info ...[more]

PMID: 15033881

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Dataset Information

Systematic review of topical capsaicin for the treatment of chronic pain.

Objective

Data sources

Study selection

Data extraction

Data synthesis

Conclusions

Publications

Systematic review of topical capsaicin for the treatment of chronic pain.

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