A 50-year-old woman was referred to a dermatology department for assessment of a lesion on her nose that had been present for 1 year. A biopsy confirmed it was a superficial basal cell carcinoma. She was treated with imiquimod 5% cream applied 5 times per week for 6 weeks. After 2 weeks of treatment, she developed mild erythema, crusting, and burning sensation at the site.