Treatment of Arsenic-Induced Bowen’s Disease With Topical 5-Fluorouracil

: Here, we present a case of arsenic-induced Bowen’s disease treated with a regimen consisting of topical 5-fluouracil and oral nicotinamide. The use of this therapy modality resulted in near complete resolution of all of the patient’s lesions except for those on her palms, soles, and scalp. Excellent wound care and treatment adherence were major factors contributing to the success of this treatment option. Our results ultimately provide an alternative approach to treating multiple arsenical keratoses in patients who are limited to a drug plan involving 5-FU and oral nicotinamide and who are able to be rigorously compliant with application of medication and wound care. J Drugs Dermatol. 2019;18(5):477-479.