pityriasis alba


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Related to pityriasis alba: pityriasis versicolor, pityriasis rosea

pityriasis

 [pit″ĭ-ri´ah-sis]
any of various skin diseases characterized by the formation of fine, branny scales.
acute lichenoid pityriasis an acute or subacute, sometimes relapsing, widespread macular, papular, or vesicular eruption that tends to crusting, necrosis, and hemorrhage; when it heals it leaves pigmented depressed scars, followed by a new crop of lesions. Progression to the chronic lichenoid form occasionally occurs.
pityriasis al´ba a chronic condition with patchy scaling and hypopigmentation of the skin of the face.
chronic lichenoid pityriasis a chronic brown to red-brown scaly macular eruption, seen mainly on the trunk, with epidermal changes and a perivascular lymphocytic infiltrate. It may arise independently or happen as a progression of the acute lichenoid form.
pityriasis ro´sea a common acute or subacute, self-limited exanthematous disease of unknown etiology. It begins with a solitary red to tan plaque (herald plaque), usually on the trunk, arms, or thighs, which is followed by similar but smaller papular or macular lesions; these later may peel and leave a scaly collarette.
pityriasis ru´bra pila´ris a chronic inflammatory skin disease marked by pink scaling macules and cone-shaped horny follicular papules; it usually begins with severe seborrhea of the scalp and face, associated with keratoderma of palms and soles.
pityriasis versi´color tinea versicolor.

pit·y·ri·a·sis al·'ba

patchy hypopigmentation of the skin resulting from mild dermatitis.

pi·ty·ri·a·sis al·ba

(pit'i-rī'ă-sis al'bă)
Patchy hypopigmentation of the skin resulting from mild dermatitis.

pityriasis alba

A common form of ECZEMA causing pinkish plaques that resolve to leave fine, scaly, pale patches. The condition affects children and adolescents and clears up spontaneously.
References in periodicals archive ?
Studies on pityriasis alba: a common facial skin lesion in Egyptian children.
Pityriasis alba: ten year survey and review of the literatura.
Clinical and histopathological characteristics of pityriasis alba. Clinical and Experimental Dermatology 2009 Vol.
Clinicopathologic study on pityriasis alba. Bol AsocMed PR 1990;82 (10):463-65.
Tacrolimus onitment 0.1% in pityriasis alba:an open-label, randomized, placebo-controlled study.
[7] This was followed by 1 case each of pityriasis alba, aphthous stomatitis and seborrheic dermatitis with mean CD4 count of 463 cells/cumm, 671 cells/cumm and 130 cells/cumm respectively.
The incidence of atopic dermatitis in our study was 3.4%, similar to other studies where range was seen from 3% to 28%.17-21 The incidence of pityriasis alba was 4.9% which is in accordance with Nanda et al.22 with 5.2%.
Atopic dermatitis has been reported as the most frequent eczema in all studies with variable figures.1-18 Other morphological forms of eczema in descending order were seborrheic dermatitis, pityriasis alba, infective eczema, napkin dermatitis, contact dermatitis, and pompholyx.