What should you know about pigmenting pityriasis alba?

The patches may begin pink or mildly irritated, then leave uneven colour that is more noticeable after tanning because surrounding skin darkens. The surface can feel dry, but severe pain, pus, thick scale, or blisters are not typical. Several conditions can cause white or pale patches, so a clinician may examine the borders and scale before confirming pityriasis alba.

Use a fragrance-free moisturiser regularly, especially after washing, and choose a gentle cleanser rather than scrubbing the patches. Sun protection reduces contrast between the affected and nearby skin and helps prevent irritation. If inflammation or itch persists, a clinician may prescribe a short course of a low-strength topical corticosteroid or another suitable treatment. Avoid bleaching products and harsh exfoliants on the area.

Arrange an assessment if patches spread quickly, become sharply defined, lose all pigment, or appear with hair colour changes. Seek care sooner for pain, warmth, crusting, discharge, or significant itch. A review is also useful when the diagnosis is uncertain, because different causes of white patches need different management.

Ask whether the scale and distribution fit pityriasis alba, whether another cause of white patches should be excluded, and how long to use any prescribed cream. Discuss a moisturising routine, sun protection for the child or adult affected, and what changes should trigger a follow-up visit.