pityriasis /pit·y·ri·a·sis/ (pit″ĭ-ri´ah-sis) any of various skin diseases characterized by the formation of fine, branny scales.
pityriasis alba
pityriasis al´ba a chronic condition with patchy scaling and hypopigmentation of the skin of the face.
pityriasis ro´sea a dermatosis marked by scaling, pink, oval macules arranged with the long axes parallel to the cleavage lines of the skin.
pityriasis ru´bra pila´ris a chronic inflammatory skin disease marked by pink scaling macules and horny follicular papules, beginning usually with seborrhea of the scalp and face, with keratoderma of palms and soles.
pityriasis versi´color tinea versicolor.
pityriasis al·ba ( l b )n. |
pityriasis alba
Etymology: Gk, pityron, bran; L, albus, white
a common idiopathic dermatosis characterized by round or oval finely scaling patches of hypopigmentation, usually on the cheeks. The lesions are sharply demarcated and occasionally pruritic and are found primarily in children and adolescents. The condition may recur, but spontaneous clearing is the usual prognosis. Treatment includes lubricating creams and topical corticosteroids. Compare pityriasis rosea.
How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
| ?Page tools | ||
|---|---|---|
|