Case 2

A 65-year-old man presents for evaluation of multiple plaques on his forehead. He claims that he used to sunbathe without sunscreen when he was a teenager and recalls having at least 1 blistering sunburn. The plaques neither itch nor hurt, but the patient is concerned with the appearance of the lesions. He has no significant medical history but notes that his sister has had squamous cell carcinoma. On examination, the patient’s forehead is erythematous with several rough plaques. Biopsy is performed, revealing a dysplastic epidermal layer.

Can you diagnose the condition in Case 1?

A. Disseminated Superficial Actinic Porokeratosis 
B. Actinic keratosis
C. Seborrheic keratosis
D. Discoid lupus erythematosus

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This article originally appeared on Clinical Advisor