Application of cantharidin, retinoic acid cream and salicylic acidy in multiple palmoplantar warts

Objective: Multiple palmoplantar warts, caused by human papillomavirus (HPV) infection, were investigated for clinical efficacy using cantharidin, retinoic acid cream, and salicylic acid cream. Methods: A total of 110 patients with multiple palmoplantar warts were enrolled. The experimental group (54 cases) received a 1:1:1 combination (CRS) of 0.25% cantharidin, 0.1% retinoic acid cream, and 5% salicylic acid, applied with pressurized encapsulation for 8 h every night, three times per week. The control group (56 cases) underwent conventional liquid nitrogen freezing. Monthly follow-ups assessed cure rate, effective rate, dermatological life quality index (DLQI), visual analog scale (VAS), and cost, with evaluations conducted after 3 months. Results: The treatment group exhibited a cure rate of 85.19% and a total effective rate of 96.30%, surpassing the control group with rates of 39.29% and 51.79%, respectively (p < 0.05). The treatment group's DLQI score (1.84 +/- 1.06) was significantly lower than the control group's score (6.04 +/- 1.78) (p = 0.0005). Additionally, the treatment group's VAS score (1.84 +/- 1.06) was notably lower than the control group's score (8.56 +/- 1.07) (p < 0.0001). The treatment group's total cost (43.20 +/- 2.85) was markedly lower than the control group's cost (206.38 +/- 90.81), with a statistically significant difference (p < 0.0001). Conclusion: The combination of cantharidin, retinoic acid cream, and salicylic acid with local encapsulation is a safe, effective, economical, and convenient treatment method for multiple palmoplantar warts, exhibiting few side effects and showing promise.