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    Pityriasis alba

    Pityriasis alba is a common skin disorder related to mild eczema.

    Causes

    The cause is unknown but is associated with eczema and a history of allergies. The disorder is most common in children and adolescents, and is more noticable in children with dark skin.

    Symptoms

    Round or oval patches of hypopigmented (lighter) skin appear on the face, upper arms, neck, and upper middle of the body. There may be flaky skin, called scales.

    The patches do nottan, but may get red quickly in the sun.

    The doctor can usually diagnose the condition by looking at the skin. Tests, such as potassium hydroxide (KOH), may be done to rule out other skin problems.

    Treatment

    Symptoms are treated with moisturizers and mild topical steroid creams. The patches usually clear up, but may return.

    Outlook (Prognosis)

    Pytiarisis alba usually goes away on its own with patches returning to normal pigment over time.

    Patches may get sunburned when exposed to sunlight. Applying sunscreen and using other sun protection can help prevent sunburn.

    When to Contact a Medical Professional

    Call your health care provider if your child has patches of hypopigmented skin.

    References

    Reider N, Fritsch PO. Other eczematous eruptions. In: Bolognia JL, Jorizzo JL, Schaffer JV, eds. Dermatology. 3rd ed. Philadelphia, Pa: Elsevier Saunders; 2012:chap 13.

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    • Skin layers

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      • Skin layers

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      Review Date: 5/15/2013

      Reviewed By: Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.

      The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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