![]() Researchers have not reached any conclusions about the relationship of pityriasis alba to the following: It often presents following sun exposure, perhaps because tanning of surrounding skin makes affected areas more prominent.Pityriasis alba often coexists with dry skin and atopic dermatitis.The hypopigmentation of pityriasis alba is more prominent, and the condition perhaps more common, in dark skin compared to white skin.Pityriasis alba mainly affects children and adolescents aged 3 to 16 years, but can occur in older and younger people.Pityriasis alba is common worldwide with a prevalence in children of around 5%. The name describes its appearance: pityriasis refers to the characteristic fine scale, and alba to its pale colour ( hypopigmentation). Pityriasis alba is a low-grade type of eczema/ dermatitis mainly seen in children.
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