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Common Pigmentation Problems in Children and Adolescents

Common Pigmentation Problems in Children and Adolescents - What it is

PITYRIASIS ALBA (PA)

Pityriasis alba is a common skin problem seen in children and adolescents. Many patients have a background or family history of atopic dermatitis/ eczema, allergic rhinitis or asthma.

PA occurs due to a mild dermatitis or eczema which subsequently leaves lighter areas of skin which is unable to tan after sun exposure. Many cases appear after sun exposure (especially after swimming), because of the contrast that results between normal skin that can tan and affected areas that cannot tan.

VITILIGO:

Vitiligo is an acquired form of decreased skin pigmentation. It results due to an immune reaction against pigment cells in the skin. The condition has a genetic basis and may affect several family members.

Vitiligo is fairly common, affecting about one percent of the population and can begin at any age.

Although most patients are otherwise healthy, a handful of patients may have other autoimmune disorders (eg. thyroid disease, diabetes).

PIGMENT MOSAICISM:

Pigment mosaicism refers to a group of skin conditions that present with either decreased (hypopigmentation) and/ or increased (hyperpigmentation) pigmentation of the skin.

Other names include "hypomelanosis of Ito", "linear and whorled nevoid hypermelanosis" and "nevus depigmentosus".

It is a fairly common condition that becomes apparent usually in infancy or early childhood.

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The information provided is not intended as medical advice. Terms of use. Information provided by SingHealth
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