A 62-year-old man with a history of hypothyroidism presented with a rash of fine scaly papules that had coalesced into a confluent orange-red plaque covering a large area of his trunk. He told the doctor it had started on his scalp about two weeks earlier and spread from there. Now the skin of his palms and soles had thickened and developed an orange hue.
What's your diagnosis. Answer here.