A man with a history of multiple nonmelanoma skin cancers presented with asymptomatic scaly lesions on his hands, arms, and head. He had had similar lesions in the past that were treated with cryotherapy and resolved. On physical examination, he had numerous erythematous scaly papules on his bilateral dorsal hands and forearms, neck, bilateral ear helices, scalp, forehead, and nose. The lesions varied from small scaly papules to scaly papules measuring almost 1 cm in size. Some lesions were more apparent with palpation than with visualization.
What is the diagnosis?
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