Evidence map›Paper›PMID 34178837›Full record

ArticleJournal of diabetes and metabolic disorders2021

The efficacy and safety profile of capsaicin 8% patch versus 5% Lidocaine patch in patients with diabetic peripheral neuropathic pain: a randomized, placebo-controlled study of south Asian male patients.

Nadia Hussain, Amira S A Said, Farideh A Javaid, Amal Hussain Ibrahim Al Haddad, Mudassir Anwar, Zainab Khan, Abdallah Abu-Mellal

Abstract read
In one paragraph

Article in Journal of diabetes and metabolic disorders, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Guideline
  2. CDC Clinical Practice Guideline for Prescribing Opioids for Pain - United States, 2022.MMWR. Recommendations and reports : Morbidity and mortality weekly report. Recommendations and reports · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Nadia HussainDepartment of Pharmaceutical Sciences, College of Pharmacy, Al Ain University, P.O.Box: 64141, Al Ain, United Arab Emirates.ORCID 0000-0001-6314-2485
Amira S A SaidDepartment of Clinical Pharmacy, College of Pharmacy, Al Ain University, P.O.Box: 64141, Al Ain, United Arab Emirates.
Farideh A JavaidDepartment of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield, HDI3DH UK.
Amal Hussain Ibrahim Al HaddadDepartment of Operations, Cambridge Medical and Rehabilitation center, Al Ain, United Arab Emirates.
Mudassir AnwarSchool of Pharmacy, University of Otago, Dunedin, 9054 New Zealand.
Zainab KhanDepartment of Internal Medicine, Punjab Care hospital, Lahore, Punjab Pakistan.
Abdallah Abu-MellalCollege of Health and Human Sciences, Charles Darwin University, Darwin, Northern territory 0810 Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsDiabetic peripheral neuropathy affects up to 60% of individuals and often leads to foot ulceration and eventual amputation. When oral therapy has failed to achieve pain relief, the first line local treatment is the 5% lidocaine-medicated plaster which provides local relief. Capsaicin 8% patch is considered a promising topical treatment for diabetic peripheral neuropathy. The present study investigated the efficacy, safety and tolerability of capsaicin 8% patch vs 5% lidocaine patch treatments over 24 weeks in South Asian male diabetic patients with established peripheral diabetic neuropathy.

methodsAnalgesic effectiveness was assessed by observing any change in the Numeric Pain Rating Scale (NPRS) score, Brief Pain Inventory (BPI) for painful diabetic peripheral neuropathy (BPI-DPN question 4) and Patient Global Impression of Change (PGIC). All patients received 4% lidocaine gel/cream for 60 min prior to patch application. The trial was probably underpowered, taking into account the smaller than expected number of participants from the calculated 350 sample size required for the whole study. Two hundred ninety-one individuals were divided into three groups based on treatment regimen; Group LL (Lidocaine + Lidocaine), Group LP (Lidocaine + Placebo), Group LC (Lidocaine + Capsaicin). The treatment procedure was conducted once initially and then repeated once at 12 weeks. The patients were followed up on alternate weeks till 24 weeks after the initial treatment.

resultsGroup LC experienced a more significant reduction in the average pain intensity (

conclusionsThe aim of the present study was to assess the efficacy, safety and tolerability of the 8% capsaicin patch in patients with established painful diabetic neuropathy. There was a sustained treatment response to the initial and repeat treatment of the capsaicin 8% patch over the 24 weeks. The study population was very specific so further studies are required to investigate the generalizability of the results for patients experiencing painful diabetic neuropathy. The patch could be considered as an effective long-term treatment option in individuals with painful diabetic neuropathy, particularly those experiencing inadequate pain relief or side effects from systemic therapies.

Indexed as

CapsaicinDiabetesDiabetic neuropathyLidocainePatch treatment

Identifiers

PMID34178837
PMCPMC8212319

What OpenQuestion holds

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.