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Atopic dermatitis is a long-term (chronic) skin disorder that involves scaly and itchy rashes.
Other forms of eczema include:
Infantile eczema; Dermatitis - atopic; Eczema
Causes, incidence, and risk factors
Atopic dermatitis is due to a skin reaction (similar to an allergy) in the skin. The reaction leads to ongoing swelling and redness. People with atopic dermititis may be more sensitive because their skin lacks certain proteins.
Atopic dermatitis is most common in infants. It may start as early as age 2 to 6 months. Many people outgrow it by early adulthood.
People with atopic dermatitis often have asthma or seasonal allergies. There is often a family history of allergies such as asthma, hay fever, or eczema. People with atopic dermatitis often test positive to allergy skin tests.However, atopic dermatitis is not caused by allergies.
The following can make atopic dermatitis symptoms worse:
Skin changes may include:
The type and location of the rash can depend on the age of the patient:
Intense itching is common. Itching may start even before the rash appears. Atopic dermatitis is often called the "itch that rashes" because the itching starts, and then the skin rash follows as a result of scratching.
Signs and tests
The health care provider will give you an exam and look at your skin. A physical exam will be done. You may need a skin biopsy to confirm the diagnosis or rule out other causes of dry, itchy skin.
Diagnosis is based on the:
Allergy skin testing may be helpful for people with:
SKIN CARE AT HOME
Daily skin care make cut down on the need for medicines.
Avoid scratching the rash or skin:
Keep the skin moist (called lubricating or moisturizing the skin). Use ointments (such as petroleum jelly), creams, or lotions 2 - 3 times a day. Choose skin products that are free of alcohol, scents, dyes, and other chemicals. A humidifier to keep home air moist will also help.
Avoid things that make your symptoms worse, such as:
When washing or bathing:
At this time, allergy shots are not used to treat atopic dermatitis.
Antihistamines taken by mouth may help with itching or allergies. You can often buy these medicines without a prescription.
Most causes of atopic dermatitis are treated with medicines placed directly on the skin or scalp (called topical medicines):
Wet-wrap treatment with topical corticosteroids may help control the condition but may lead to an infection.
Other treatments that may be used include:
Atopic dermatitis is a long-term condition. You can control it with treatment, by avoiding irritants, and by keeping the skin well-moisturized.
In children, the condition often starts to go away around age 5 - 6, but flare-ups will often occur. In adults, the problem is generally a long-term or returning condition.
Atopic dermatitis may be harder to control if it:
Calling your health care provider
Call your health care provider if:
Children who are breast-fed until age 4 months are less likely to get atopic dermatitis.
If a child is not breast-fed, using a formula that contains processed cow milk protein (called partially hydrolyzed formula) may cut down on the chances of developing atopic dermatitis.
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Greer FR, Sicherer SH, Burks, W and the Committee on Nutrition and Section on Allergy and Immunology. Effects of early nutritional interventions on the development of atopic disease in infants and children: The role of maternal dietary restriction, breastfeeding, timing of introduction of complementary foods, and hydrolyzed formulas. Pediatrics. 2008;121:183-191.
Lewis-Jones S, Mugglestone MA; Guideline Development Group. Management of atopic eczema in children aged up to 12 years: summary of NICE guidance. BMJ. 2007;335:1263-1264.
Ascroft DM, Chen LC, Garside R, Stein K, Williams HC. Topical pimecrolimus for eczema. Cochrane Database Syst Rev. 2007 Oct 17;(4):CD005500.
Bath-Hextall FJ, Delamere FM, Williams HC. Dietary exclusions for established atopic eczema. Cochrane Database Syst Rev. 2008 Jan 23;(1):CD005203.
Reviewed by:Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.
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