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Pityriasis rubra pilaris

Pityriasis rubra pilaris refers to a group of disorders characterized by reddish orange, scaling plaques and keratotic follicular papules. Symptoms may include reddish-orange patches on the skin, severe flaking, uncomfortable itching, thickening of the skin on the feet and hands, and thickened bumps around hair follicles. For some, early symptoms may also include generalized swelling of the legs, feet and other parts of the body. PRP has a varied progression and a varied rate of improvement. There is currently no known cause or cure for PRP.

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Plain-language summary adapted from Wikipedia. Not medical advice.