Pigmenting pityriasis alba

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dc.contributor.authorDu Toit M.J.
dc.contributor.authorJordaan H.F.
dc.date.accessioned2011-05-15T16:17:36Z
dc.date.available2011-05-15T16:17:36Z
dc.date.issued1993
dc.description.abstractWe conducted a prospective study of 20 patients with pigmenting pityriasis alba (PPA) over a period of two years. Characteristic morphology revealed a central zone of bluish hyperpigmentation surrounded by a hypopigmented, slightly scaly halo of variable width. All patients displayed lesions on the face. Concomitant extrafacial involvement was uncommon. A significant finding was an associated dermatophyte infection in 13 patients (65%). These patients all received griseofulvin 10 mg/kg/day for eight weeks, resulting in the resolution of PPA in seven within 4 to 20 weeks. These were also treated with 1% hydrocortisone. Biopsy specimens from two patients showed similar features, namely, a subacute dermatitis with variable pigment incontinence. Immunohistochemical labeling revealed a preponderance of T lymphocytes. Pigmenting pityriasis alba seems to be a variant of classic pityriasis alba showing a strong association with dermatophyte infection, especially tinea capitis. It may be related to lichenoid melanodermatitis.
dc.description.versionArticle
dc.identifier.citationPediatric Dermatology
dc.identifier.citation10
dc.identifier.citation1
dc.identifier.issn07368046
dc.identifier.urihttp://hdl.handle.net/10019.1/14291
dc.subjectantifungal agent
dc.subjectgriseofulvin
dc.subjecthydrocortisone
dc.subjectpigment
dc.subjectadolescent
dc.subjectadult
dc.subjectarticle
dc.subjectchild
dc.subjectclinical article
dc.subjectclinical feature
dc.subjectdermatitis
dc.subjectdermatomycosis
dc.subjectdermatophyte
dc.subjectdisease association
dc.subjecterythematosquamous skin disease
dc.subjectface
dc.subjectfemale
dc.subjecthuman
dc.subjecthuman tissue
dc.subjecthyperpigmentation
dc.subjecthypopigmentation
dc.subjectimmunohistochemistry
dc.subjectincontinentia pigmenti
dc.subjectmale
dc.subjectmorphology
dc.subjectpreschool child
dc.subjectprospective study
dc.subjectschool child
dc.subjectskin biopsy
dc.subjectskin pigmentation
dc.subjectt lymphocyte
dc.subjecttinea capitis
dc.subjectAdolescent
dc.subjectAdult
dc.subjectChild
dc.subjectChild, Preschool
dc.subjectDermatitis, Atopic
dc.subjectDermatomycoses
dc.subjectFemale
dc.subjectFollow-Up Studies
dc.subjectGriseofulvin
dc.subjectHuman
dc.subjectHydrocortisone, Topical
dc.subjectImmunoglobulin E
dc.subjectMale
dc.subjectPigmentation Disorders
dc.subjectPityriasis
dc.subjectProspective Studies
dc.subjectSkin
dc.titlePigmenting pityriasis alba
dc.typeArticle
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