An elderly man presents with generalized erythroderma, as shown. Upon standing, only the patient’s abdominal creases are spared from erythroderma. The patient has peripheral eosinophilia. Which of the following is the most likely diagnosis?

A. Drug reaction with eosinophils and systemic symptoms (DRESS)

B. Mastocytosis

C. Papuloerythroderma of Ofuji

D. Pityriasis rubra pilaris

E. Secondary syphilis

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