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Guide · skin conditions

Atopic dermatitis isn’t just dry skin. It’s a vicious cycle between the skin barrier, the immune system and the microbiome.

Most articles about atopic dermatitis, the most common type of eczema, start with a list of symptoms. This one starts where the trouble really begins: with a skin barrier that loses too much water, an immune alarm that has a hard time switching off, and the tiny residents of your skin that change during a flare-up. Once you understand this cycle, you also know what skin care can do.

You’ll also hear it called atopic eczema or simply eczema. In everyday use they mean the same condition.

Atopic dermatitis on the back of the hand – red, dry skin between the knuckles, before and after
Reading time
≈ 22 min
Published
July 30, 2026
Medically reviewed
July 30, 2026
Author
Chicatella Editorial Team
Medically reviewed by
How we put this article together
We build this article on clinical guidelines, systematic reviews and peer-reviewed research. Every number links to its source, right next to the text and in the list at the bottom of the page. The content is educational. It doesn’t diagnose and doesn’t replace a doctor’s exam. Chicatella publishes this article and sells the products shown near the end.
In short

What we’ve learned about atopic dermatitis, in nine sentences

A summary of everything we explain at more length on this page and across the site. If you read only one thing, read this.

“You can’t fill a bucket that leaks.”

WHY MOISTURIZING ALONE DOESN’T CUT IT
Read the science behind Chicatella →
  • 01

    It’s not just dry skin.

    The skin barrier leaks: water gets out, irritants and microbes get in. That’s why moisturizing alone doesn’t cut it until you protect the barrier.

  • 02

    It itches and comes back in waves.

    Dry skin itches, scratching damages it, and inflammation makes the itch even stronger. The cycle is easiest to break early, with regular care, not only during a flare-up.

  • 03

    Where it shows up changes with age.

    Babies: cheeks, forehead, the outer sides of arms and legs. Kids: skin folds, wrists, neck. Adults: hands, eyelids, neck. The diaper area usually stays clear.

  • 04

    Red is just one color of inflammation.

    On darker skin, inflammation looks purple, gray or brown. Touch tells you more than color: rough, dry, with tiny bumps.

  • 05

    A photo can’t diagnose it.

    Contact dermatitis, fungal infections and psoriasis can look the same in a picture. A doctor makes the diagnosis during an exam.

  • 06

    Food usually isn’t the cause.

    In babies with more severe eczema, food is a trigger in about one in three. In adults, it’s rare. Targeted testing, not cutting foods across the board.

  • 07

    A protective film is the most tangible help.

    An occlusive (petrolatum, lanolin) slows water loss from the skin’s surface and gives the skin the calm it needs to recover. Skin care, not medicine.

  • 08

    The microbiome is an ally.

    You can’t sterilize your skin, and it doesn’t need that. It needs calm. Gentle washing, fragrance-free, microbiome-friendly.

  • 09

    When to see a doctor right away.

    Weepy, very painful skin with pus, or eczema that spreads fast, needs a doctor to look at it, not a new product.

The basics, if you need them

Short answers first

If you just want a quick answer, you’ll find it here. Further down the page, we get into what really makes a difference.

What is atopic dermatitis?
A long-lasting skin inflammation where the skin’s protective layer is weakened. Skin gets dry, itchy, red and cracked. Symptoms come and go in flare-ups. It most often starts in childhood, and it’s the most common type of eczema.
How is it different from ordinary dry skin?
Ordinary dry skin usually gets better with regular moisturizing. Atopic dermatitis also brings inflammation and itching on top of the dryness. That’s why moisture alone often isn’t enough and the skin keeps going up and down.
What does it look like on different skin tones?
On lighter skin you usually see redness. On darker skin, redness is harder to see, and the skin looks more purple, brown or gray. Dryness and thickened skin stand out more than color. That’s exactly why a photo can’t be used to diagnose it.
Is it contagious?
No. You can’t pass it on by touching or hugging.
Why does it come in flare-ups?
Because it’s an inflammation that reacts to triggers: irritants, dry air, sweat, heat, stress, infections. When several of them add up, the barrier gives way and the inflammation and itching get stronger. That’s what we feel as a flare-up. Then things calm down, but the tendency stays.
Do kids always grow out of it?
Not always. For many it calms down over the years. For some it stays, or comes back later, for example as hand eczema. There’s no reliable way to predict it.
How is it diagnosed?
A doctor looks at your skin and asks how the symptoms have developed and about your family history. If needed, they rule out other conditions. A single photo isn’t enough for a diagnosis.
When should I see a doctor?
When the itch gets in the way of sleep and daily life, when you see signs of infection, when it spreads fast, or when your usual care isn’t helping. With babies, check in sooner. You’ll find all the warning signs further down the page.
A number people misread

More people have the diagnosis. Your own risk isn’t higher.

IN 1990
107 million
people worldwide with atopic dermatitis
IN 2021
129 million
the total grew by about one fifthGBD 2021↗︎
KIDS
11 in 100
kids and teens have atopic dermatitis
ADULTS
6 in 100
adults have atopic dermatitis2025 review↗︎

More people with a diagnosis doesn’t mean a higher risk for each person.

There are more of us

More people live on Earth than in 1990. That alone pushes the total up.

We’re older

Once you adjust for the age of the population, the share of people with the condition actually drops a little.

We track it better

Today the condition gets recognized and recorded better than it did thirty years ago.

What about food and the environment?

That’s a real research question that’s still open. Several studies link a Western-style diet, highly processed food and polluted air with a higher risk of atopic dermatitis, especially in more Western, urban areas.Processed food 2021↗︎Diet in pregnancy↗︎ It’s a link, not a proven cause in any one person, but it’s serious enough that we’d rather mention it honestly than leave it out.

The main story

Four parts, one vicious cycle

Tap each part to see how one problem drives the next. None of them is the main culprit. Only together do they make up the condition.

↻VICIOUS
CYCLE
01 · WEAKENED BARRIER

The top layer of the skin is like a wall. When it isn’t sealed well, more water escapes through it, and irritants and allergens get in more easily. Dry, leaky skin gets irritated faster. That irritation sets off the next link in the cycle.Barrier 2024↗︎

Atopic dermatitis isn’t one broken thing. It’s a system where several problems feed each other.

The skin barrier

The barrier is more than an oily film on the surface

Picture a brick wall. Skin cells are the bricks, and between them is a fatty mortar made of ceramides, cholesterol and fatty acids. When there isn’t enough mortar, the wall leaks: water gets out, irritants get in.

Healthy barrier
AIR water stays in the skin
Weakened barrier
AIR water escapes through the whole skin

Here’s something interesting: with atopic dermatitis, even skin that looks healthy is often a little different. That doesn’t mean you need to treat your whole body. But it does mean regular, gentle care pays off in the calm stretches too.Skin without a rash↗︎

A note on wording: skin doesn’t “breathe,” whatever the ads say. What matters is water loss and how well the barrier seals. That can be measured.

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The microbiome

Your skin isn’t alone. It has its own team.

Healthy skin is home to a diverse community of bacteria, yeasts and other tiny residents. That’s the microbiome, and it isn’t dirt. It’s part of your defense. It helps keep the surface slightly acidic, takes up space that less friendly neighbors would otherwise grab, and works together with the skin’s immune system.

Variety is good

A more diverse community means a more stable surface. In that sense, healthy skin is a well-planted garden, not a sterile room.

DIVERSE, STABLE
It falls apart during a flare-up

Variety drops and the bacterium S. aureus takes over, especially on active patches.

S. AUREUS TAKES OVER
That’s why we don’t sterilize

The goal isn’t to kill everything. The goal is to give the skin conditions where its own team can recover. A protective “stand-in” layer on top of the skin can help with that.

CALM → THE TEAM RECOVERS

What harms the microbiome most? Harsh soaps that raise the skin’s pH, strong surfactants, fragrance and alcohol, and long hot showers. That’s why at Chicatella we talk about microbiome-friendly care: we cleanse gently and don’t strip the skin more than we need to.

Worth knowing, so we don’t overpromise
COLONIZATION ≠ INFECTION

Just because a bacterium is there doesn’t mean there’s an infection or that you need an antibiotic. That’s for a doctor to decide.Meta↗︎

A LINK ISN’T A CAUSE

The link between S. aureus and how severe the condition is, is moderate. It doesn’t prove the bacterium is the only cause.Meta 2026↗︎

THE MICROBIOME ALONE ISN’T ENOUGH

In one study, researchers managed to reduce S. aureus, but symptoms didn’t improve in any meaningful way. The microbiome is part of the story, not the whole story.Omiganan↗︎

The microbiome isn’t an enemy to sterilize. It’s an ally that needs calm.

Itching

Itching is more than a symptom

The itch of atopic dermatitis isn’t a lack of willpower. It’s a physical event. Some inflammatory substances in the skin wake up the nerve fibers directly, and others make the skin more sensitive to itch.

The fact that new medicines target exactly these signals says a lot: itch is a real treatment goal, not a bad habit. And poor sleep isn’t laziness. It’s one of the hardest parts of this condition.

The itch–scratch cycle
1
Inflammation wakes up the nerve fibers. The skin itches.
2
Scratching feels better for a moment.
3
New tiny injuries and new inflammatory signals follow.
↻
The itch gets even stronger. The cycle keeps turning.
Washing

Every wash is a daily test for your skin barrier

Washing isn’t the enemy. What matters is how you wash: how hot the water is, how long and how often, what you use and what’s in it, and how hard you scrub with a washcloth or towel.

all
of the bar soaps tested (37 out of 37) were strongly alkaline, far from the skin’s pH.
85 %
of soap-free liquid cleansers were acidic, so closer to the skin.
13 %
of products even listed their pH on the label.250 cleansers 2024↗︎

pH isn’t the only thing that counts. The whole formula matters. A “pH-balanced” label on its own doesn’t mean a cleanser is gentle.

How to wash in five steps
1
A short wash with lukewarm water.
2
A gentle cleanser, no scrubbing.
3
Pat your skin dry, don’t rub hard.
4
Use any prescribed medicine the way your doctor told you.
5
Put on protective care as soon as you can, while your skin is still damp.Guidelines↗︎
Protective film

The strongest everyday skin care tool: a protective film

If the barrier leaks, the most direct help is to slow water loss from the outside. That’s exactly what an occlusive does: it forms a film on the skin that keeps water underneath. Your skin gets the calm it needs to recover.

Humectant

Draws in and holds water, glycerin for example.

Emollient

Smooths the surface and fills the cracks between flakes of skin.

Occlusive

Forms a film that slows down water evaporating. The most tangible help for very dry skin.

With a protective film
AIR PROTECTIVE FILM (OCCLUSIVE) water stays under the film, in the skin

An occlusive is a roof over your skin. And a roof is exactly what cracked skin needs while the repairs happen underneath.

How much a film cuts water loss depends on the ingredient, the amount, how thick you put it on and for how long. That’s why we don’t promise one single percentage for every case. What holds true: for very dry, cracked skin, a thicker, more occlusive product usually works better than a light, watery cream.Occlusives review↗︎

What you can do

A short plan for every day

This doesn’t replace treatment from your doctor, but it’s a good foundation.

✓
Treat inflammation the way your doctor tells you.
✓
Moisturize regularly, even when your skin looks calm.
✓
Keep showers short and gentle, and apply care right after.
✓
Avoid overheating, sweating and rough rubbing.
✓
Short nails and soft fabrics.
✓
Write down possible triggers, but don’t cut out everything one by one.
✓
Go back to your doctor if care isn’t helping or the rash changes.
Mini tool

Seven-day flare-up diary

For one week, jot down the things below. The patterns will help when you talk to your doctor.

Sleep and nighttime itching
New products or foods
Heat and sweating
Prescribed treatment
How the patches look and how big they are
Stress and mood
Treatment

Basic skin care is the foundation. Always.

Caring for the barrier is the foundation of treatment. With more severe eczema, though, it isn’t always the whole treatment.

01
Basic care: every day, for everyone

Regular moisturizing, gentle cleansing, a protective film on cracked spots and avoiding irritants. It’s the only step that applies to everyone, all the time, even when your skin looks calm. Everything else builds on it.

02
Anti-inflammatory creams

As your doctor directs, matched to the area and how the eczema behaves.

03
Light therapy and systemic medicines

For moderate to severe disease, always under a specialist’s care.

For more severe cases, there are now also biologic medicines and pills from the JAK inhibitor group. A specialist decides on them, because they work differently and carry different risks. This is information only, not a recommendation.EuroGuiDerm↗︎

48,2 %
average score on the scale among 117 parents
Fear of steroid creams: data from Slovenia

Careful, this does not mean “48% of parents are afraid of creams.” It’s the average score on a fear questionnaire. Parents who had read more online content about the dangers reported more fear.SLO 2026↗︎

The most dangerous thing an online article can do is scare someone away from the treatment their doctor prescribed.

Just so we’re clear

Steroid creams aren’t the enemy

During an inflamed flare-up they’re often a necessary part of treatment, and for decades they’ve been the best-studied anti-inflammatory medicine for atopic dermatitis. Used the way your doctor prescribes them, the right strength in the right place at the right time, they calm inflammation faster and more safely than waiting for it to “go away on its own.”

  • →Untreated inflammation does more harm to the skin than a properly used cream: itching, scratching, infections, poor sleep.
  • →Fear of them often leads to using too little, for too short a time, so the flare-up drags on and keeps coming back.
  • →Skin care like Chicatella works alongside treatment, during flare-ups and after them. It doesn’t replace it.
  • →If you’re worried, ask your doctor how long, where and how much. Don’t stop treatment because of an online article, this one included.
The state of the evidence

What we know, what we suspect and what we don’t know yet

Well supported
  • Genes, the barrier and the immune response all work together.
  • Smoking and polluted air are linked to a higher risk.
  • Heat, cold, sweat and irritants make it worse for some people.
Possible link, not proof
  • Some environmental and early-childhood factors.
  • Taking antibiotics.
  • Very high or very low temperatures.
Not enough evidence
  • That microplastics, one chemical or “modern food” is the main culprit.
  • That there’s a diet that helps everyone.
  • That the condition can be solved just by changing the microbiome.

With pollution, there’s an important difference between a small risk for a whole population and a certain cause in one person. Using it to scare people isn’t fair.Environment 2025↗︎Review 2026↗︎

Facts and myths

Eight things most people get wrong

01

More cases overall doesn’t mean a higher risk for any one person.

02

Even skin that looks healthy can be a little different.

03

The microbiome is an ally, but it isn’t an on/off switch for the condition.

04

A bacterium being present isn’t the same as an infection.

05

Moisturizing helps the skin you have, but it didn’t stop eczema from developing in every baby.

06

A “pH-balanced” label doesn’t tell you everything about how gentle a cleanser is.

07

A protective film reduces water evaporating. It doesn’t treat inflammation.

08

General diets without a confirmed allergy mostly bring little benefit.

More about food

In a review of studies, about 50 in 100 people who cut out foods saw a clear improvement, and so did 41 in 100 of those who didn’t. The difference is small and the evidence is weak. So cutting out dairy, gluten or several food groups without a confirmed allergy isn’t recommended. If you suspect an allergy, let a doctor and, if needed, a dietitian decide.Diet review↗︎

When to see a doctor fast

Signs not to wait on

If you notice any of the signs below, get medical help. It could be an infection that needs quick care.

Getting worse fast, and pain.
Clusters of blisters or tiny, punched-out sores.
Fever, extreme tiredness or feeling unwell.
Yellow crusts, pus, spreading redness, warmth or swelling.
Changes around the eyes.
A new rash that doesn’t respond to your usual treatment.

At the same time: S. aureus being there, or skin that weeps a little, doesn’t mean every flare-up needs an antibiotic. That’s for a doctor to decide.AAD↗︎NICE↗︎

A word on contact dermatitis

Among Slovenian children who were referred for patch testing, contact sensitivity was found in 27.7% of kids with atopic dermatitis and 22.7% of kids without it. That is not a figure for all children, only for this selected, referred group.SLO 2026↗︎

Skin care in practice

Two products, two important jobs

Once you understand how the skin works, the routine is simple: cleanse without irritating and protect the cracked surface so water stays in the skin. 

Gentle body wash for kids with eczema-prone skin – SOS Body Wash bottle and flowing gel
Job 1 · Gentle cleansing
SOS Body Wash

For very dry, eczema-prone skin. Gently cleanses the whole body without stripping the skin more than it needs to. Microbiome-friendly, fragrance-free.

See the product →
Ointment for babies with atopic dermatitis-prone skin – open jar of SOS Ointment
Job 2 · Protective film
SOS Ointment

Forms a protective film and helps reduce moisture loss on cracked, very dry areas. Our most occlusive care for the days your skin needs calm.

See the product →

How to use SOS Ointment on eczema-prone skin, step by step: eczema cream.

Product claims are cosmetic and kept separate from the medical information on this page, in line with EU Regulations 1223/2009 and 655/2013. Chicatella doesn’t treat or diagnose any condition.

Customer experiences

Before and after

Each photo shows the same area before and after care. Customer photos, shared with permission.

Browse→
Atopic dermatitis on the neck and chest before and after – dry, red skin on an adult woman
Atopic dermatitis on the hands before and after – red, scaly patch across the knuckles
Atopic dermatitis on the chest before and after – scratch marks and red spots on the skin
Atopic dermatitis on the wrist before and after – red patches on a young person’s hand
Atopic dermatitis on the legs before and after – red, blotchy patch on the lower leg
Atopic dermatitis in children before and after – red, bumpy rash on a child’s neck
Atopic dermatitis in a toddler before and after – round red patches on the arm and shoulder
Atopic dermatitis in babies before and after – rough, red rash on a baby’s cheek
Atopic dermatitis on the ankle before and after – red, inflamed-looking patch above the heel
Atopic dermatitis on a child’s face before and after – red, dry patch on the cheek
Atopic dermatitis in the elbow crease before and after – classic red, rough inner-arm rash
Atopic dermatitis on the back of the hand – rough red patches before, smooth skin after

These photos were sent to us by customers themselves, after using our care at home. We’re very grateful for their trust, and that’s exactly why we need to be honest about this too: our care is cosmetic, not medicine. It doesn’t cure atopic dermatitis, and we don’t see these photos as proof of treating a disease. Every skin responds in its own way, so experiences vary and yours may be different.

Help me choose

Find the right care for your skin in three steps

No guesswork. Answer three quick questions and we’ll tell you what your skin needs.

Advanced questions

For those who want to go deeper

Do probiotics cure atopic dermatitis?
There’s no reliable evidence for that. As we saw with the microbiome, changing the tiny community on your skin doesn’t mean the symptoms go away. We support the microbiome with gentle care, not with promises.
Is Staphylococcus aureus always an infection?
No. A bacterium being there isn’t the same as an infection. Whether an infection needs treatment is for a doctor to decide based on the signs, not just on whether the bacterium is present.
Do I need allergy testing?
Not as a rule. It makes sense if a contact allergy or a specific trigger is suspected. Your doctor decides whether to refer you.
Do I need to cut out dairy or gluten?
Usually not. Cutting foods without a confirmed allergy isn’t recommended, and in kids it can lead to nutrition problems. If an allergy is suspected, let a doctor and a dietitian decide.
Are steroid creams dangerous?
Used as your doctor directs, they’re an important and well-researched part of treatment. Fear of them is common, but it can lead to undertreatment. Your doctor decides on the dose and how long to use them.
Can I use an occlusive ointment every day?
For very dry skin, regular use makes sense and is a good idea. If you see signs of infection or things get worse, talk to your doctor, because an ointment on its own doesn’t treat inflammation.
What if my scalp is the worst spot?
The scalp needs care that suits that area: gentle washing and less rubbing. If itching or flaking won’t go away, see your doctor, since other conditions can show up there too.
Why does my skin get worse even though I use “natural” products?
“Natural” isn’t the same as “gentle.” Plant extracts and essential oils can be irritating or cause allergies too. What counts is the whole formula and how your skin reacts, not what the label says.
Related reading

Want to read more?

Atopic dermatitis in babies
Gentle care for the littlest ones, cheeks and skin folds, and when to see a doctor.
Read →
Atopic dermatitis in children
Scratching, daily routines and the pressures of school.
Read →
Eczema
How the word “eczema” relates to atopic dermatitis.
Read →
Dry skin
When dryness is just dryness, and when it’s more.
Read →
Dermatitis: an overview
Contact, seborrheic, perioral and other types.
Read →
Eczema cream
How SOS Ointment stands in for the barrier on eczema-prone skin: a guide to using it.
Read →
Sources & references
Every claim above also links to its source right in the text.
  1. 01Global Burden of Disease 2021: atopic dermatitis. PubMed. ↗︎
  2. 02Systematic review of prevalence, 2025. Dermatitis. ↗︎
  3. 03The Skin Barrier in Atopic Dermatitis, 2024. J Invest Dermatol. ↗︎
  4. 04Skin lipids and barrier function, 2024. PubMed. ↗︎
  5. 05Neuroimmune mechanisms of itch, 2025. PubMed. ↗︎
  6. 06Non-lesional skin in atopic dermatitis. Allergy. ↗︎
  7. 07Meta-analysis of S. aureus colonization. PubMed. ↗︎
  8. 08Pediatric meta-analysis of colonization, 2024. PubMed. ↗︎
  9. 09Colonization and disease severity, meta-analysis 2026. PubMed. ↗︎
  10. 10Omiganan study. PubMed. ↗︎
  11. 11Microbiome changes with dupilumab. PubMed. ↗︎
  12. 12Petrolatum: barrier repair and antimicrobial response. JACI. ↗︎
  13. 13The role of moisturizers in dermatitis (occlusives, lanolin). Clin Med Res. ↗︎
  14. 14pH of 250 cleansing products, 2024. PubMed. ↗︎
  15. 15S3 guideline for atopic dermatitis, 2024. JDDG. ↗︎
  16. 16Cochrane: emollients and moisturizers for eczema. ↗︎
  17. 17BEEP: five-year results. PubMed. ↗︎
  18. 18Different effects of emollient creams on the barrier. PubMed. ↗︎
  19. 19Meta-analysis of ceramide moisturizers. PubMed. ↗︎
  20. 20EuroGuiDerm: living guideline, 2025. JEADV. ↗︎
  21. 21Comparative analysis of systemic treatments. JAMA Dermatol. ↗︎
  22. 22Slovenian study of steroid phobia, 2026. PubMed. ↗︎
  23. 23Systematic review of elimination diets. PubMed. ↗︎
  24. 24Environmental factors and visits for AD, 2025. PubMed. ↗︎
  25. 25Umbrella review of environmental factors, 2026. PubMed. ↗︎
  26. 26Slovenian study of contact sensitization, 2026. PubMed. ↗︎
  27. 27AAD: warning signs. ↗︎
  28. 28NICE: eczema herpeticum. ↗︎
  29. 29NICE: secondary bacterial infection of eczema. ↗︎
  30. 30EU Regulation 655/2013 on cosmetic claims. ↗︎

This content is for general education and doesn’t replace a diagnosis or treatment from your doctor, pediatrician or dermatologist. If things get worse fast, or you notice pain, signs of infection or eye involvement, get medical help.