Pityriasis Alba: Patient Information

The patches may look lighter than the surrounding skin and can have a fine, dry scale. They are often noticed on the cheeks, around the mouth, or on the arms, particularly in children and young people. The contrast can look stronger after tanning because nearby skin darkens while the affected areas do not. Pityriasis alba is not a sign that the skin is dirty, and it is not contagious. A clinician can distinguish it from other causes of pale patches, including fungal infection, vitiligo, or eczema.

Use a gentle cleanser, short lukewarm washes, and a fragrance-free moisturiser regularly, especially after bathing. Emollient therapy can soften scaling and support the skin barrier. Avoid scrubbing, picking, and strongly fragranced products, which may increase dryness. Daily broad-spectrum sunscreen on exposed skin reduces tanning contrast and protects the surrounding skin. If itch, redness, or scale is troublesome, a dermatologist may consider a short course of a prescribed topical corticosteroid; use it only as directed and keep it away from the eyes unless specifically instructed.

Arrange a medical review if the patches spread quickly, become painful, ooze, crust, or develop marked inflammation. Seek advice when the colour change is sharply defined, affects many body areas, or does not fit the usual dry facial pattern. A review is also useful if the diagnosis is uncertain or the appearance is causing distress, because treatment differs between conditions.

Could this be pityriasis alba or another cause of pale patches? Should I use an emollient every day? Would a topical corticosteroid be appropriate for this location and age? What changes should prompt a follow-up visit?