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PapersLocal treatments for cutaneous warts: systematic reviewCommentary: Systematic reviewers face challenges from varied study designs

BMJ 2002; 325 doi: https://doi.org/10.1136/bmj.325.7362.461 (Published 31 August 2002) Cite this as: BMJ 2002;325:461

Aggressive cryotherapy

I am surprised by the definitions used for the duration of
cryotherapy.I suspect that most cryotherapy of warts is now done in
general practice in the U.K..In my practice and that of at least one other
practioner in Worcester 10 seconds or less would be considered a placebo,
15 seconds plus would be the minimum time to expect a satisfactory
response and 25 seconds plus 'aggressive'.On this basis I do not believe
cryotherapy has been satisfactorily studied in this article.

Competing interests: No competing interests

07 September 2002
richard whitmore
GP
Worcester,wr1 2bs