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    Nummular eczema

    Eczema - discoid; Nummular dermatitis

    Nummular eczema is an allergydisorder in which itchy, coin-shaped spots or patches appear on the skin.

    Causes

    The cause of nummular eczema is unknown. Butthere usually is a personal or family history of:

    • Allergies
    • Asthma
    • Atopic dermatitis

    Things that can make the condition worse, include:

    • Dry skin
    • Environmental irritants
    • Stress
    • Temperature changes

    Symptoms

    • Coin-shaped skin lesions that appear on the arms and legs
    • Lesions may spread to middle of body
    • Lesions may ooze and become crusty
    • Itching
    • Scaly or raw skin
    • Skin redness or inflammation

    Exams and Tests

    Your doctor can usually diagnose this condition by looking at your skin and asking about your family's medical history.

    A skin biopsy may be needed to rule out other similar conditions.

    Treatment

    Avoid triggers that can make your symptoms worse, such as wool, lanolin, and certain foods. Do not take frequent baths. Excess bathing and soap can cause dry skin, which often makes the condition worse. Also, avoid hot water while taking a bath or shower.

    Your doctor may recommend skin lotion, special soap, or moist bandages to soothe scaly, dry, or healing areas. Antihistamines may be prescribedtorelieve itching.

    Persons with severe symptoms may beprescribed ointments that contain tar, corticosteroids,or other medicines that lower the immune system. In very severe cases, more powerful corticosteroids are prescribed..

    Outlook (Prognosis)

    Nummular eczema is a long-term (chronic) condition. Medical treatment and avoiding irritants can help reduce symptoms.

    Possible Complications

    A secondary infection of the skin may develop.

    When to Contact a Medical Professional

    Call your health care provider if you have symptoms of this condition.

    Also call for an appointment with your health care provider if:

    • Symptoms continue despite treatment
    • You have signs of infection (such as fever, redness, or pain)

    Prevention

    There is no known way to prevent the disorder. Avoid any triggers that make your symptoms worse.

    References

    Habif TP. Clinical Dermatology: A Color Guide to Diagnosis and Therapy. 5th ed. Philadelphia, Pa.: Elsevier Mosby; 2009:chap 3.

    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

      illustration

      • Skin layers

        illustration

      Self Care

        Tests for Nummular eczema

          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, Medical Director, A.D.A.M., Inc.

          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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          St. Luke's Hospital - 232 South Woods Mill Road - Chesterfield, MO 63017 Main Number: 314-434-1500 Emergency Dept: 314-205-6990 Patient Billing: 888-924-9200
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