Intralesional Vitamin D Injection for Treatment of Common Warts

Inclusion Criteria: * Adult patients seen at the Mayo Clinic Rochester practices * Patients suffering from one or more cutaneous warts as diagnosed by the examining physician at baseline visit on typical diagnostic characteristics * Able to provide consent * Both recalcitrant and non-recalcitrant warts will be included Exclusion Criteria: * Patients with prior use of home or office-based destructive treatments for this wart(s) in the last 1 month with salicylic acid (SA) or cryotherapy * Immunoadjuvant therapy for warts in the last 4 months (e.g Candida) * History of vitamin D injection of warts ever * High-dose vitamin D supplementation (\>4,000 IU daily or equivalent) in the preceding 3 months * Pregnancy or lactation * Facial or genital warts * Lesions not felt by the examining clinician to be a wart (e.g., corns or calluses) * Immunosuppression (to include immunosuppressive medications or conditions as judged by the physician evaluating the patient at the baseline visit). * Allergy to sesame oil