Baby mit Neurodermitis im Gesicht

Story

When It Itches All the Time

Atopic dermatitis is one of the most common chronic diseases in children. But many adults are also affected. There is no cure for the disease. But there are many ways to get along well with her. And it's not uncommon for the itching to suddenly stop on its own.

The skin is dry and sensitive, becomes red, develops flakes—and itches: a typical case of atopic dermatitis. And this is despite the fact that Angela is very conscientious when it comes to her personal hygiene. Applying lotion after her daily shower is part of her routine. She’s able to keep her dermatitis somewhat under control, but when the air is very dry, she still experiences recurring flare-ups.

“Unfortunately, this is a very typical case,” says Claudia Lang. The dermatologist-allergist specializes in neurodermatitis, also known as atopic dermatitis, and conducts research on the condition. “This is often frustrating for patients. We are now much better able to help, but even today, there is no cure for the disease.”

Genetic predisposition

Atopic dermatitis is very common among children and adolescents worldwide; nearly one in five children is affected. It often continues to develop into adulthood. But even so, about five percent of all adults in Switzerland continue to suffer from this inflammatory skin condition. The diagnosis is made based on the clinical presentation: Does the location of the affected areas match? Does the disease progress in episodes? Is it chronic? Do you have itching? The exact cause remains unclear. Not least because various factors often come into play. However, there is a genetic predisposition to developing atopic dermatitis. “We now know that in a great many of these patients, a protein that is supposed to hold skin cells together is altered,” explains Claudia Lang. “You can think of it like a wall: the bricks are the skin cells, and the mortar between them is held together by the protein. If this protein is defective, the entire wall begins to crumble and becomes porous.”

Impaired protective function

Using this image, the specialist tries to explain to the affected person what is happening to their skin. The consequences are serious: The skin becomes dry and brittle. On the one hand, this causes itching. Because the substance that acts as a sealant or mortar between skin cells is missing, the skin also loses its protective function, making it much easier for pathogens or allergens to penetrate. They trigger local inflammation, which further intensifies the itching. And depending on the pathogen, inflammatory atopic dermatitis can quickly turn into an infected form—for example, due to a herpes infection. “This makes consistent skin care all the more important,” emphasizes Karin Grando, a skin care specialist in dermatology. She explains the prescriptions to each patient in detail and tells them how to use each product. “Applying moisturizing products several times a day is the key to success.”

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Not a typical allergy

Very often, these patients also suffer from hay fever, asthma, or food allergies. These conditions, along with neurodermatitis, are classified as atopic diseases. Atopy refers to the body’s response to environmental factors by producing IgE antibodies. Atopic dermatitis is not an IgE-mediated reaction—that is, one in which the skin immediately worsens, for example, after eating hazelnuts. Nevertheless, some patients report that their skin condition worsens in connection with certain foods or during hay fever season. It is an inflammatory reaction in the skin that is influenced by various factors and leads to an excessive response by the immune system.

Multi-stage therapy

Thanks to its close ties to research, the University Hospital of Zurich is consistently able to offer innovative, proven therapies. Take, for example, the drug dupilumab, which is approved for certain severe forms of atopic dermatitis. It is injected under the skin every two weeks and, according to USZ specialist Peter Schmid, has proven to be a highly effective alternative. “It very selectively inhibits certain neurotransmitters and has a strong anti-inflammatory effect.” The only downside: The treatment is very expensive. However, in severe cases of atopic dermatitis, health insurance companies would generally cover the costs, at least for a certain period of time, according to Schmid.

During an acute flare-up, cortisone is often used topically. This locally inhibits the immune response and, consequently, the severe inflammatory reaction. The side effects on the body are minimal, since topical cortisone rarely enters the bloodstream. In cases of widespread atopic dermatitis, medications that temporarily suppress the immune system as a whole may also be used. For the dermatologist, however, this is not a sustainable option. “As soon as you stop taking these medications, a new flare-up may occur. Often, patients don’t tolerate the medications very well either.”

Effective, simple, and without side effects

The second treatment of choice after anti-inflammatory ointments such as cortisone is light therapy. It acts directly on the skin, has virtually no side effects, and is therefore also suitable for pregnant women. Because it filters out a specific wavelength in the UVB spectrum, it does not increase the risk of skin cancer. Above all, however, it can have a long-term, positive effect. In addition, the actual treatment is extremely short: a session lasts just a few minutes. Its only drawback is the sometimes considerable organizational effort required to hold two to three sessions a week for three to four months. Incorporating treatment into your commute: With the services offered by the USZ at the Circle at Zurich Airport, this might be easier for some people.

Learning to Live with the Disease

For Karin Grando, the most important thing is that those affected learn to cope with the disease and the constant itching. And not to give up. These are simple tips she can share with her patients. “If there’s enough time. First and foremost, after the doctor’s appointment, we go over the prescribed treatment again and explain how to use, apply, or take the medications.” What other tips would she share? “Avoid anything that puts extra strain on your skin. So take a shower with lukewarm water and a gentle stream, pat yourself dry—never rub. Or try wearing your underwear with the seams on the outside every now and then.”

Claudia Lang, Dr. med.

Study doctor, Department of Dermatology

Tel. +41 44 255 11 11
Specialties: Atopic dermatitis/neurodermatitis, Mastocytosis, Contact allergies

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