A 91-year-old man with a history of basal cell carcinoma presents for evaluation of the shown lesions on his scalp. His daughter, a nurse who is present with him for his appointment, notes that he had purulent bumps in the same area a few days earlier. Which of the following is the most appropriate treatment for the patient’s condition?

A. Oral cefdinir

B. Patch testing

C. Skin biopsy

D. Topical ketoconazole

E. Ultrapotent corticosteroids

F. Wide local excision

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