pityriasis rubra pilaris [Gk, pityron, bran; L, ruber red, pilus, hair] , a chronic inflammatory cutaneous disease characterized by tiny acuminate, reddish brown follicular papules topped by central horny plugs in which are embedded hairs; disseminated yellowish pink scaling patches; and often solid confluent hyperkeratosis of the palms and soles with a tendency to fissuring.
