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A Double-Blind, Randomised, Placebo-Controlled Trial of EMLA Cream (Eutectic Lidocaine/Prilocaine Cream) for Analgesia Prior to Cryotherapy of Plantar Warts in Adults.
Lee SH, Pakdeethai J, Toh MP, Aw DC.
Ann Acad Med Singapore. 2014 Oct;43(10):511-4.
INTRODUCTION:
Cryotherapy with liquid nitrogen is an effective, safe and convenient form of treatment for plantar warts. EMLA cream (eutectic mixture of lidocaine 2.5% and prilocaine 2.5%) is a topical local anaesthetic agent that has proven to be effective and well tolerated in the relief of pain associated with various minor interventions in numerous clinical settings.
MATERIALS AND METHODS:
In a single-centre, double-blind, randomised placebo-controlled study, 64 subjects were randomised into 2 groups. The subjects had a thick layer of EMLA cream or placebo cream applied to pared plantar wart(s) and onto the surrounding margin of 1 mm to 2 mm under occlusion for 60 minutes prior to receiving cryotherapy. The pain of cryotherapy was evaluated by the subjects using a self-administered Visual Analogue Scale (VAS) immediately after the cryotherapy.
RESULTS:
There was no statistical difference between the mean VAS score for EMLA? cream (47.0 ? 21.4 mm) and placebo (48.9 ? 22.0 mm). Those with more than 1 wart had a significantly higher VAS score than those with only 1 wart (59.1 ? 21.8 vs. 44.3 ? 20.4, P <0.05) but this did not affect the therapeutic effect of EMLA? cream prior to cryotherapy.
CONCLUSION:
We conclude that the application of EMLA? cream prior to cryotherapy does not reduce the pain associated with cryotherapy.
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