Pityriasis alba (Q43885): Difference between revisions

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Dermatose inflamatória de baixo grau comum de etiologia desconhecida, na qual múltiplas máculas pequenas com descamação fina aparecem na face e, menos comumente, em ombros e braços de crianças. Podem inicialmente ser levemente eritematosas, mas logo se tornam hipopigmentadas com escamas superficiais finas. Histopatologicamente há uma leve dermatite espongiótica subaguda com redução da melanina. É mais proeminente em crianças com pele pigmentada e pode levantar preocupação sobre vitiligo.
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A common low grade inflammatory dermatosis of unknown aetiology in which multiple small finely scaling macules appear on the face, and less commonly the shoulders and upper arms, of children. These may initially be mildly erythematous but soon become hypopigmented with fine surface scale. Histopathologically there is a mild subacute spongiotic dermatitis with reduction in melanin. It is more prominent in children with pigmented skin and may give rise to concern about vitiligo.

Revision as of 11:05, 13 August 2026

A common low grade inflammatory dermatosis of unknown aetiology in which multiple small finely scaling macules appear on the face, and less commonly the shoulders and upper arms, of children. These may initially be mildly erythematous but soon become hypopigmented with fine surface scale. Histopathologically there is a mild subacute spongiotic dermatitis with reduction in melanin. It is more prominent in children with pigmented skin and may give rise to concern about vitiligo.
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EA88.4
    English
    Pityriasis alba
    A common low grade inflammatory dermatosis of unknown aetiology in which multiple small finely scaling macules appear on the face, and less commonly the shoulders and upper arms, of children. These may initially be mildly erythematous but soon become hypopigmented with fine surface scale. Histopathologically there is a mild subacute spongiotic dermatitis with reduction in melanin. It is more prominent in children with pigmented skin and may give rise to concern about vitiligo.

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