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The hypopigmented patches on this child's left cheek is characteristic of pityriasis alba. This condition is thought to be a variant of atopic dermatitis. The lesions are slightly scaly and have poorly defined borders. They often improve with a low strength topical steroid application. The patches tend to be more prominent in the summer and fall as the child's normal skin tans and gets darker with the sunlight exposure whereas the affected areas remain paler.