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Published on: July 16, 2014
Neuropathic pain in spinal cord injury: topical analgesics as a possible treatment
T C Crul1, J M Stolwijk-Swüste2, D J Kopsky3
1Center of Excellence for Rehabilitation Medicine, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University and De Hoogstraat Rehabilitation, Utrecht, The Netherlands.
Study Design:
Review of the literature and semi-structured interviews.
Objective:
To explore the possible use of topical analgesics for the treatment of neuropathic pain (NP) in spinal cord injury (SCI).
Setting:
Institute for Neuropathic Pain, Soest, The Netherlands.
Methods:
A review was performed of studies on topical analgesics for SCI-related NP published up to May 2019. In addition, eight persons with SCI-related NP who were treated with topical analgesics were interviewed in a semi-structured interview on their experience with topical analgesics.
Results:
Seven studies (five case reports and two case series) were found that evaluated the use of topical analgesics for SCI-related NP. None of the studies used a control treatment. Topical analgesics included baclofen, ketamine, lidocaine, capsaicin, and isosorbide dinitrate. All studies reported a decrease in NP over time. Persons interviewed were 49-72 years of age and all but one had an incomplete SCI. They used topical agents containing phenytoin, amitriptyline, baclofen, ketamine or loperamide. All showed a decrease in pain of at least 3 points on the 11-point numeric rating scale during this treatment.
Discussion/Conclusions:
Evidence on the use of topical analgesics in SCI is scarce. Case reports, case series and interviews suggest that the use of topical analgesics can be beneficial in treating SCI-related NP. Placebo-controlled studies are required to investigate the effect of topical analgesics on SCI-related NP.
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