A n 82-year-old woman presents with multiple rough, scaly, ill-defined erythematous papules and plaques on her nose, cheeks, and forehead. The lesions occur on a background of sun-damaged skin.
The most likely diagnosis is
Seborrheic keratosis
Actinic keratosis
Seborrheic dermatitis
Basal cell carcinoma
Poikiloderma