Main Entry: pityriasis ru·bra pi·lar·is Pronunciation: -'rü-br&-pi-'lar-&s Function: noun : a chronic dermatitischaracterized by the formation of papular horny plugs in the hair follicles and pinkish macules which tend to spread and become scaly plaques
pityriasis rubra pilaris pityriasis rubra pi·lar·is (pĭ-lâr'ĭs) n. A chronic eruption of the hair follicles, which become firm, red, surmounted with horny plugs, and often form scaly patches.
