INTRODUCTION:Common warts are hyperkeratotic, benign cutaneous growths caused by types 1, 2, and 7 Human papilloma viruses. Different modalities are available to treat warts. Cryotherapy is one of the most common and effective treatments for common warts. Trichloroacetic acid (TCA), in high concentrations, can be used as a therapeutic modality.

OBJECTIVES:The aim of this study is to compare the efficacy and safety of cryotherapy using liquid nitrogen (spray method) versus trichloroacetic acid 90% in treatment of common warts.

PATIENTS AND METHODS:Thirty-five patients with 414 common warts, from the Dermatology outpatient clinic, Assiut University Hospital, were enrolled in this study. We used two techniques for the treatment of common warts. The lesions in each patient were divided into two groups (A and B), group A treated by cryotherapy while group B treated by trichloroacetic acid (TCA) 90%.

RESULTS:There was significant decrease in the size of the warts in both groups. There were statistically significant better results among group A than group B regarding the mean percentage of improvement (90.11 ± 27.92 vs 26.19 ± 42.93, respectively; P < 0.001) and grade of improvement, where good response was obtained in 89.2% in group A compared with 26.2% in group B (P < 0.001). Complete cure was significantly higher in group A (83.1%) than group B (21.3%; P < 0.001). However, side effects were significantly higher among group A than group B.

CONCLUSION:Cryotherapy is more effective than TCA 90% in treatment of common wart. TCA 90% has lesser complications than cryotherapy.

BACKGROUND:Despite the wide practical application of homoeopathy, scientific proof of its effectiveness and mechanisms is still lacking, and sound, placebo-controlled studies are scarce.

OBJECTIVE:The purpose of our study was to evaluate the efficacy of homoeopathy in a prospective, double-blind randomized trial.

METHODS:60 children aged 6-12 years with common warts on the back of the hands were treated either with an individually selected homoeopathic preparation (n = 30) of at least a 1:1,012 dilution or with pure placebo in the form of saccharose globuli (n = 30) under double-blind conditions. The area occupied by warts was measured by computerized planimetry before and after 8 weeks of treatment. Reduction of the warty area by at least 50% was considered a response.

RESULTS:There were a total of 16 responders: 9 of 30 patients in the homoeopathic therapy group and 7 of 30 patients in the placebo group (chi 2 = 0.34, p = 0.56). Total cure of warts occurred in 5 patients in the treated group and in 1 patient in the placebo group (chi 2 = 1.46, p = 0.22).

CONCLUSION:There was no apparent difference between the effects of homoeopathic therapy and placebo in children with common warts under the conditions of this study.