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Preventing Eczema Skin Cracks Could Reduce Allergy Issues

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Many babies with eczema go on to develop food allergies, asthma and hay fever, and researchers at National Jewish Health say it’s not a coincidence. The cracks caused by eczema weaken the skin barrier, allowing allergens to penetrate the skin and cause a sequence of allergic diseases, what experts call the “atopic march.”

“About a third of patients with eczema will develop food allergies,” said Donald Leung, MD, division head of pediatric allergy and clinical immunology at National Jewish Health. “When common allergic foods are introduced through cracks in the skin rather than through the digestive system, the body recognizes them as invaders and develops an allergy.”

The atopic march begins in infancy with eczema, progresses with food allergies in the next year or so and often continues with asthma or hay fever a few years later. However, Dr. Leung says there are ways to help stop it in its tracks. “The key to preventing the atopic march is early intervention,” said Leung. “Restoring that skin barrier as soon as eczema develops will keep allergens, food particles and irritants out.”

To do that, experts recommend what they call “soak and seal,” which involves thoroughly wetting the skin and applying lotion to seal in moisture. Knowing what causes the atopic march is also opening the door to research that will find solutions. Dr. Leung says he hopes new technology will soon allow doctors to easily sequence children’s skin, predict who is at risk for allergies and repair the skin before these conditions develop.

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