Pityriasis alba is a common skin condition affecting children and occasionally young adults.
Several round or oval slightly scaly pink patches appear, leaving pale marks when the redness has faded.
Pityriasis alba patches are more apparent in summer, especially in dark-skinned children, because they don't tan as well as the surrounding skin.
Pityriasis alba is a mild form of dermatitis of unknown cause. It will clear up after a few months, or in some cases persist two or three years. The colour gradually returns completely to normal.
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