pityriasis

(pit"I-ri'a-sis) [G. pityra, bran.] dermatosis marked by branny desquamation, p. al'ba atroph'icans, atrophoderma albidum. p. cap'it is, dermatitis seborrhoica of the scalp, p. circina'ta, an acute affection marked by a red scaly, eruption, with slight fever of short duration p. licheno'des, maculopapular erythrodermia. p. lin'- guse, geographical tongue, p. macula'ta, p. circinata. p. margin a'ta, a parasitic scaly eruption. p. nos'tras, tinea nodosa, p. pila'ris, (i) keratosis pilar is; (2) p. rubra pilar is, p. ro's ea, an eruption of patches of varying size, of a pink color covered with whitish scales; this is the macular form; in the circinate form the patches tend to increase in size peripherally while clearing in the center, p. ru'bra, dermatitis exfoliativa, a generalized red dermatitis marked by branny desquamation, p. ruTara pila'ris, lichen ruber, lichen psoriasis, an eruption of papules surrounding the hair follicles, each papule pierced by a hair, and tipped with a homy, more or le greasy scale, p. sim'plex, seborrhea simplex, p. versic'- olor, tinea versicolor.