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Comparative Study of Benzoyl Peroxide Versus Clindamycin Phosphate in Treatment of Pitted Keratolysis

Beom Joon Kim,Kyoung Un Park,Ji Young Kim,Ji Young Ahn,Chong Hyun Won,Jong Hee Lee,Nark Kyoung Rho,Soo Hong Kim,So Yun Cho,Oh Sang Kwon,Chang Hun Huh,Sang Woong Youn,Myeung Nam Kim,Byung In Ro
Epub 2016 February 20

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Abstract



Background: Pitted keratolysis (PK) is a bacterial infection of the stratum corneum. The infection is characterized by

1 to 7 mm discrete and coalescing craterlike pits on the plantar surfaces of the feet and toes, especially the weight-bearing areas. Topically applied antibiotics such as clindamycin, benzoyl peroxide erythromycin, and clotrimazole are curative.


Objective: We performed this study to compare treatment efficacy of benzoyl peroxide (BP) and clindamycin phosphate (CP) in PK.


Method: The clinical study was made in 44 patients with PK. Among 44 patients, 17 patients were treated by BP topical application alone, 15 patients treated by CP. And the others by combined topical application of BP and CP.


Result: There were no significant differences in the treatment efficacy between BP and CP, and between monotherapy and combination therapy, neither.

1) Gender ratio showed extreme male predominance (M:F = 43:1), and the mean age of onset was 22 years old.

2) Mean disease duration was 2.8 months and mean period for complete cure was 2.6 weeks. And there was no significant relation between disease duration and mean period for complete cure.

3) Hyperhidrosis (18.1%) was the most commonly associated condition with PK. The followings were Tinea pedis (13.6%), T. cruris (6.8%), erythrasma (6.8%), cellulitis (6.8%), osmidrosis (6.8%), wart (6.8%), and corn (6.8%) in the order of frequency.

4) There was no statistically significant difference in the treatment efficacy between BP and CP (p>0.05).

5) Among 44 patients, irritation was observed in 4 cases (9.1%). Two cases were related with BP, and the others with CP. But these adverse effects were trivial and disappeared soon.

6) Four cases (9.1%) showed recurrence within 3 month-follow up. And they were all related with hyperhidrosis. There was no statistically significant difference in the recurrence rate between BP and CP, although patients treated with CP showed slightly higher recurrence rate (p>0.05).


Conclusion: Our study shows that no significant difference in the treatment efficacy between benzoyl peroxide and clindamycin phosphate, and between monotherapy and combined therapy, neither. Therefore, combination therapy should be spared for only intractable PK.



Keywords


Pitted Keratolysis Benzoyl peroxide Clindamycin




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