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Atopic dermatitis: Overview
Also called: Eczema
This is a common skin disease in children. It is so common that people have given it a few names:
- Eczema (name most people use)
- Atopic (a-top-ic) eczema
- Atopic dermatitis
To avoid confusion, we’ll use the medical term atopic dermatitis.
Children often get atopic dermatitis (AD) during their first year of life. If a child gets AD during this time, dry and scaly patches appear on the skin. These patches often appear on the scalp, forehead, and face. These patches are very common on the cheeks.
No matter where it appears, AD is often very itchy. Infants may rub their skin against bedding or carpeting to relieve the itch.
In children of all ages, the itch can be so intense that a child cannot sleep. Scratching can lead to a skin infection.
Because atopic dermatitis can be long lasting, it is important to learn how to take care of the skin. Treatment and good skin care can alleviate much of the discomfort.
Atopic dermatitis: Signs and symptoms
Atopic dermatitis (AD) looks different in infants, children, and adults. The following gives you the signs (what you see) and symptoms (what you feel) for each age group.
AD can begin early. A child may be 2 or 3 months old when AD begins. When AD begins early, it often causes:
- A rash that appears suddenly and:
- makes the skin dry, scaly, and itchy.
- forms on the scalp and face, especially on the cheeks (can appear on other areas of the body).
- can bubble up, then ooze and weep fluid.
- causes itching that may come and go.
- Rubbing against bedding, carpeting, and other things in order to scratch the itch.
- Trouble sleeping.
- Skin infections, common due to rubbing and scratching.
Parents often worry that their babies are getting AD in the diaper area. A babies rarely gets AD in his or her diaper area. The skin stays too moist for AD.
ChildrenWhen AD begins between 2 years of age and puberty, the child often has these signs and symptoms:
- A rash that often begins in the creases of the elbows or knees. Other common places for the rash to appear are the neck, wrists, ankles, and/or crease between the buttocks and legs.
- Itchy, scaly patches where the rash appeared.
In time, the skin with AD can:
- Get bumpy, looking like permanent goose bumps.
- Lighten (or darken) where AD appears.
- Thicken, turning leathery to protect itself from constant scratching.
- Develop knots (only on the thickened skin).
- Itch all the time (only on the thickened skin).
The thickened skin can itch even when the AD is not flaring.
When talking about the thickened skin, your dermatologist may use the word lichenification. This word means thickened skin.
It is rare for adults to get AD. Most people (90%) get AD before age 5. About half (50%) of people who get AD during childhood continue to have milder signs and symptoms of AD as an adult. When an adult has AD, it often looks different from the AD of childhood. For adults, AD often:
- Appears in the creases of the elbows or knees and nape of neck.
- Covers much of the body.
- Can be especially noticeable on the neck and face.
- Can be especially bad around the eyes.
- Causes very dry skin.
- Causes non-stop itch.
- Causes scaly skin — more scaly than in infants and children.
- Leads to skin infections.
If a person has had AD for years, patches of skin may be thick and darker than the rest of the skin (or lighter). Thickened skin can itch all the time.
Adults who had AD as a child and no longer have AD can have the following:
- Extremely dry skin.
- Skin that is easily irritated.
- Hand eczema.
- Eye problems (eczema on eyelids, cataracts).
Images used with permission of the American Academy of Dermatology National Library of Dermatologic Teaching Slides
Atopic dermatitis: Who gets and causes
Who gets atopic dermatitis?
Around the world, between 10% and 20% of children have AD. About 1% to 3% of adults have AD. People of all skin colors get AD.
Most people (90%) get AD before their 5th birthday. AD rarely starts when a person is an adult.
AD is much more common today than it was 30 years ago. Dermatologists are not sure why. They do know that some children have a greater risk of getting AD. The following seem to increase a child’s risk of getting AD:
- Family members have AD, asthma, or hay fever: Does the child’s mother or father have AD? Does a parent have asthma or hay fever? A family history of these diseases remains the strongest risk factor. If one or both parents have AD or an allergic condition, the child is much more likely to get AD. Some children get all 3 diseases. Asthma and hay fever usually appear before the age of 30. People often have asthma and hay fever for life.
- Where child lives: Living in a developed country, city (especially one with higher levels of pollution), or a cold climate seems to increase the risk. For example, Jamaican children living in London are twice as likely to develop AD as those who live in Jamaica.
- Gender: Females are slightly more likely than males to get AD.
- Mother’s age when child born: When the mother gives birth to the child later in her childbearing years, a child is more likely to get AD.
- Social class: AD seems more common in higher social classes.
What causes atopic dermatitis?
Researchers are still studying what causes AD. Through their studies, they have learned that AD:
- Is not contagious: There is no need to worry about catching it or giving it to someone.
- Runs in families: People who get AD usually have family members who have AD, asthma, or hay fever. This means that genes play a role in causing AD.
- Children are more likely to develop AD if one or both parents have AD, asthma, or hay fever.
- About half (50%) of the people with severe AD (covers a large area of the body or is very troublesome) will get asthma and about two-thirds (66%) will get hay fever.
Can certain foods cause atopic dermatitis?
Foods do not cause AD. But some studies suggest that food allergies can make AD worse. Children who have AD often have food allergies to these foods — milk and foods that contain milk (e.g., yogurt and cheese), nuts, and shellfish.
Before you stop feeding your child any foods, talk about this with your child’s dermatologist. Children need certain foods to grow and develop normally.
Researchers continue to study what causes this complex disease. They believe that many things interact to cause AD. These things include our genes, where we live, and the way our immune system works.
Atopic dermatitis: Diagnosis and treatment
How do dermatologists diagnose atopic dermatitis?
To diagnose atopic dermatitis (AD), a dermatologist begins by looking at the child’s skin. The dermatologist will look for a rash. The dermatologist also will ask questions. It is important for the dermatologist to know whether the child has itchy skin. The dermatologist also needs to know whether blood relatives have had AD, asthma, or hay fever.
Sometimes a dermatologist will perform a patch test. This medical test is used to find allergies. It involves placing tiny amounts of allergens (substances that cause allergies for some people) on the child’s skin. The dermatologist will check the skin for reactions. Checks are often done after a few hours, 24 hours, and 72 hours. Studies suggest that some allergens can make AD worse.
How do dermatologists treat atopic dermatitis?Treatment cannot cure AD, but it can control AD. Treatment is important because it can:
- Prevent the AD from getting worse.
- Calm the skin, relieving pain and itch.
- Reduce emotional stress.
- Prevent infections.
- Stop the skin from thickening. Thickened skin often itches all the time — even when the AD is not flaring.
A treatment plan often includes medicine, skin care, and lifestyle changes. Skin care and lifestyle changes can help prevent flare-ups. Many patients receive tips for coping. Doing all of this may seem bothersome, but sticking to the plan can make a big difference.
A dermatologist will create a treatment plan tailored to the patient’s needs. Medicine and other therapies will be prescribed as needed to:
- Control itching.
- Reduce skin inflammation (redness and swelling).
- Clear infection.
- Loosen and remove scaly lesions.
- Reduce new lesions from forming.
Studies have found that when AD develops in an infant or young child, the child tends to get better with time. For some children, the condition completely disappears by age 2.
About half (50%) of the children who get AD will have it as an adult. The good news is that the AD often becomes milder with age.
There is no way to know whether the AD will go away or be a lifelong disease. This makes treatment very important. Treatment can stop the AD from getting worse. Treatment also helps to relieve the discomfort.
Atopic dermatitis: Tips for managing
Most children’s eczema does not have a clear cause, such as an allergy, but most eczema will improve with good skin care. These tips from dermatologists can reduce the severity and frequency of your child's flare-ups.
- Bathe your child in warm — not hot — water.
- Limit your child’s time in the bath to 5 or 10 minutes.
- Use cleanser only when needed and make sure the cleanser is mild and fragrance-free. Do not use bubble bath.
- If your child’s eczema is frequently infected, twice-weekly bleach baths may be beneficial. Discuss this option with your child’s dermatologist.
- After bathing, gently pat your child’s skin partially dry.
- If your child has medicine that you apply to the skin, apply medicine when your child’s skin is almost dry and use the medicine as directed.
- Apply moisturizer on top of the medicine and to the rest of your child’s skin.
Tips for choosing a moisturizer
- When selecting a moisturizer, consider choosing a thick cream or ointment.
- Some children do better with fragrance-free products, so consider petroleum jelly — an inexpensive, fragrance-free product that works well for many children.
- When selecting a product, “trial and error” sampling of different types may help to identify the best moisturizer for your child.
Tips to ease discomfort
- For best results, apply moisturizer at least twice a day. This prevents dryness and cracking. It also can decrease the need for eczema medications.
- If your child has severe itching and scratching, ask your child’s dermatologist about wet wrap therapy. This can reduce swelling and lessen the desire to scratch.
- Keep your child’s fingernails short and smooth. This decreases the likelihood that scratching will puncture the skin. Putting cotton gloves on your child’s hands at night may help prevent scratching during sleep.
- Keep temperature and humidity levels comfortable. Avoid situations in which the air is extremely dry, or where your child may sweat and overheat. This is the most common trigger of the itch/scratch cycle.
- Using a laundry detergent made for sensitive skin may be beneficial. Scented fabric softener or dryer sheets may contribute to irritation.
- Only use the recommended amount of detergent.
- Use enough water for adequate rinsing.
- Buy clothes without tags because tags can rub against the skin, causing irritation.
- Wash your child’s new clothes before wearing. This will remove excess dyes and fabric finishers, which can irritate the skin.
Good skin care is a key part of gaining control of your child’s eczema. If skin care has not been a regular part of your child’s treatment, you should make an appointment for your child to see a dermatologist.
Are the shots that treat hay fever and other allergies useful?
Allergy shots have not proven helpful for AD. Shots may even make AD worse. There is an exception. If the shots treat a patient's lung allergies, the skin may get better. Before trying allergy shots, be sure to talk with a dermatologist.
Support groups and other resources:National Eczema Association
Offers support groups and telephone support for people living with atopic dermatitis
Atopic dermatitis: Bleach bath therapy
If your child’s dermatologist recommends bleach baths, follow these important steps for giving a bleach bath:
- Use regular strength – 6 percent – bleach for the bath. Do not use concentrated bleach.
- Use a measuring cup or measuring spoon to add the bleach to the bath. Adding too much bleach to the bath can irritate your children’s skin. Adding too little bleach may not help.
- Measure the amount of bleach before adding it to the bath water. For a full bathtub of water, use a half cup of bleach. For a half-full tub of water, add a quarter cup of bleach. For a baby or toddler bathtub, add one teaspoon of bleach per gallon of water.
- Never apply bleach directly to your child’s eczema. While the tub is filling, pour the bleach into the water. Be sure to wait until the bath is fully drawn and bleach is poured before your child enters the tub.
- Talk with your dermatologist about how long your child should soak in the tub. Most dermatologists recommend a five- to 10-minute soak.
- Pat your child’s skin dry after the bath. If your child uses eczema medication, apply it immediately after the bath. Then moisturize your child’s skin.
Talk with a board-certified dermatologist before beginning bleach bath therapy with your child. If you have questions or concerns about caring for your child’s eczema, you should make an appointment to see a dermatologist.