Atopic Dermatitis (Eczema): Symptoms, Causes & Treatment — Complete Guide
Updated: 5 days ago
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 2026
Quick Answer: What Is Atopic Dermatitis (Eczema)?
Atopic dermatitis, commonly called eczema, is a chronic condition that causes dry, itchy and inflamed skin. It usually begins before age 5, often appears where the skin flexes, is not contagious and may persist into adulthood. Most cases improve with regular moisturizing, gentle skin care and avoiding triggers; severe eczema may need prescription creams, pills or biologics.
What the research says
Moisturizing a healthy baby's skin has not been shown to prevent eczema. A Cochrane review of 33 randomized trials (11 studies and 5,217 infants contributed to the meta-analyses) found that skin care such as emollients during the first year of life probably does not change the risk of eczema by 1–3 years (risk ratio 1.03, 95% CI 0.81–1.31; 7 trials, 3,075 participants) and probably increases skin infections (risk ratio 1.33, 95% CI 1.01–1.75; 6 trials, 2,728 participants). This concerns prevention in healthy infants, not treating eczema that is already present. (Kelleher et al., Cochrane Database Syst Rev, 2022) [3]
For moderate-to-severe eczema in adults, newer systemic medicines were compared head to head. A living network meta-analysis of 83 trials (22,122 participants) found upadacitinib 30 mg and abrocitinib 200 mg most efficacious up to 16 weeks, with dupilumab ahead of tralokinumab (tralokinumab odds ratio 0.4, 95% credible interval 0.3–0.6 for a 50% improvement in eczema severity versus dupilumab). (Drucker et al., Br J Dermatol, 2024) [4]
Early antibiotic exposure is linked to a modestly higher risk of childhood eczema. A meta-analysis of 39 sources covering 7,487,925 children found antibiotic exposure during pregnancy or childhood associated with higher eczema risk (odds ratio 1.22, 95% CI 1.17–1.28), though the authors note very high heterogeneity and urge cautious interpretation. (Zhao et al., EClinicalMedicine, 2025) [5]
TL;DR — The Essentials in 30 Seconds
What it is: A chronic (long-lasting) skin condition causing dry, itchy, inflamed skin — not contagious, but it flares from time to time.
Symptoms: Dry, cracked skin; itchiness (pruritus); a rash on swollen skin that varies in color by skin tone; small raised bumps on brown or Black skin; oozing and crusting; thickened skin; darkening around the eyes; raw skin from scratching.
Where it appears: Most often inside the elbows, behind the knees, and in front of the neck — in adults, often in patches where skin rubs or sweats (waistband, sock line, watch, necklace).
Causes: A gene variation weakening the skin's barrier, too much Staphylococcus aureus bacteria on the skin, or an immune response — often with a family history of eczema, allergies, hay fever, or asthma.
Common triggers: Wool, dry skin, heat and sweat, stress, dust mites and pet dander, mold, pollen, tobacco smoke, fragrances, and cleaning products; in children, sometimes eggs or cow's milk.
Treatment: Moisturize twice daily, gentle 10-minute warm baths, 1% hydrocortisone anti-itch cream, prescription topical or oral medicines, wet dressings, light therapy, or biologics for severe cases.
Outlook: Controllable but persistent — treatments may need adjusting over months or years, and flares can return.
At a Glance: Atopic Dermatitis Summary
Topic | Key Facts |
What it is | A chronic skin condition (eczema) causing dry, itchy, inflamed skin — not contagious |
Who gets it | Most often young children (usually begins before age 5), but can occur at any age |
Where it appears | Inside elbows, behind knees, front of neck; friction/sweat spots in adults |
Main cause | Gene variation weakening the skin barrier; excess Staphylococcus aureus bacteria; immune response |
Main risk factor | Personal or family history of eczema, allergies, hay fever, or asthma |
Common triggers | Wool, heat and sweat, stress, dust mites, pet dander, mold, pollen, smoke, fragrances, chemicals |
Key self-care | Moisturize twice a day; warm 10-minute baths; gentle nonsoap cleanser; moisturize within 3 minutes of drying off |
First treatment step | OTC 1% hydrocortisone anti-itch cream, used as directed before moisturizing |
Severe-case options | Prescription pills, wet dressings, light therapy, or injectable biologics |
Outlook | Chronic — controllable, but flares can return; needs long-term skin care habits |
What Is Atopic Dermatitis?
Atopic dermatitis (eczema) is a condition that causes dry, itchy, and inflamed skin. It is common in young children but can occur at any age. The condition is long lasting (chronic) and tends to flare sometimes — meaning symptoms appear, calm down, and may return. It can be irritating, but it is not contagious.
Atopic dermatitis most often occurs where the skin flexes — inside the elbows, behind the knees, and in front of the neck. In adults, flares often form patches on areas of the body prone to friction or sweat: where a waistband sits, where socks or shoes rub, under a watch, or along the neck where a headband, necklace, or tie rests.
People with atopic dermatitis are at higher risk of developing food allergies, hay fever, and asthma — conditions that can appear before or after the skin condition does. This is why eczema is described as one part of a wider pattern of sensitivity, not just a surface rash.
What are the symptoms of atopic dermatitis (eczema)?
Atopic dermatitis symptoms vary widely but often include dry, cracked skin, intense itchiness and a rash, and they can appear anywhere on the body. They may include:
Dry, cracked skin
Itchiness (pruritus) — the signature symptom
A rash on swollen skin that varies in color depending on your skin color
Small, raised bumps, especially on brown or Black skin
Oozing and crusting
Thickened skin
Darkening of the skin around the eyes
Raw, sensitive skin from scratching
Atopic dermatitis often begins before age 5 and may continue into the teen and adult years. For some people, it flares and then clears up for a time — even for several years.
When to See a Doctor
Talk with a healthcare provider if you or your child:
Has symptoms of atopic dermatitis
Is so uncomfortable that the condition is affecting sleep and daily activities
Has a skin infection — look for new streaks, pus, or yellow scabs
Has symptoms even after trying self-care steps
Seek immediate medical attention if you or your child has a fever and the rash looks infected.
What Causes Atopic Dermatitis?
Scientists describe healthy skin as a brick wall. With age — or when someone is genetically predisposed to sensitive skin — that wall can become more like a wicker basket, letting moisture out and irritants in. Three mechanisms drive the condition:
A gene variation that weakens the skin's ability to protect itself. With a weak barrier, skin is less able to retain moisture and less able to block bacteria, irritants, allergens, and environmental factors such as tobacco smoke.
Too much of the bacteria Staphylococcus aureus on the skin. This displaces helpful bacteria and disrupts the skin's barrier function.
An immune system response triggered by the weak barrier, which produces the inflammation, itch, and other symptoms.
Atopic dermatitis is one of several types of dermatitis — others include contact dermatitis and seborrheic dermatitis (dandruff). None of them are contagious.
Risk Factors: Who Gets Eczema?
The main risk factor for atopic dermatitis is having had eczema, allergies, hay fever, or asthma in the past. Having family members with these conditions also increases your risk.
What complications can atopic dermatitis (eczema) lead to?
Atopic dermatitis (eczema) can lead to a chain of complications, especially when the skin is untreated or heavily scratched.
Complication | What Happens |
Asthma and hay fever | Many people with atopic dermatitis develop asthma and hay fever, before or after the skin condition |
Food allergies | Often develop alongside eczema; a main symptom is hives (urticaria) |
Neurodermatitis | Chronic itchy, scaly skin (lichen simplex chronicus) — scratching briefly relieves, then activates nerve fibers and makes skin itchier, causing thick, leathery, discolored skin |
Skin discoloration | Patches darker (hyperpigmentation) or lighter (hypopigmentation) than surrounding skin after the rash heals; more common in brown or Black skin; can take months to fade |
Skin infections | Repeated scratching breaks the skin, raising the risk of bacterial and viral infections that can spread and become life-threatening |
Irritant hand dermatitis | Affects people whose hands are often wet and exposed to harsh soaps, detergents, and disinfectants at work |
Allergic contact dermatitis | An itchy rash from touching substances you're allergic to — common in people with atopic dermatitis |
Sleep problems | The itchiness interferes with sleep |
Mental health conditions | Associated with depression and anxiety, likely from constant itching and poor sleep |
How Is Atopic Dermatitis Diagnosed?
To diagnose atopic dermatitis, your healthcare provider will talk with you about your symptoms, examine your skin, and review your medical history. Tests may be needed to identify allergies and rule out other skin diseases.
Your doctor may recommend patch testing. In this test, small amounts of different substances are applied to your skin and covered. During visits over the next few days, the doctor looks for signs of a reaction. Patch testing can help diagnose specific allergy types causing your dermatitis.
How is atopic dermatitis treated, from moisturizers to biologics?
Treatment usually starts with regular moisturizing and self-care habits. If these don't help, your provider may suggest medicated creams that control itching and repair skin — sometimes combined with other treatments.
One important reality: atopic dermatitis can be persistent. You may need to try various treatments over months or years to control it — and even if treatment succeeds, symptoms may return in a flare.
Medications
Option | For Whom | Key Notes |
Medicated skin products | All severities | Creams, gels, and ointments in various strengths; apply as directed (often twice a day) before moisturizing; overuse of topical corticosteroids may thin the skin |
Calcineurin inhibitors (tacrolimus/Protopic, pimecrolimus/Elidel) | Over age 2 | Apply before moisturizing; avoid strong sunlight; carries an FDA black box warning about lymphoma risk, though 10 years of study found no causal relationship and no increased cancer risk |
Antibiotics (pills) | With infection | Prescribed to treat bacterial infection |
Anti-inflammatory pills (cyclosporine, methotrexate, prednisone, mycophenolate, azathioprine) | More severe eczema | Effective but not for long-term use due to potential serious side effects |
Injectable biologics (dupilumab/Dupixent, tralokinumab/Adbry) | Moderate-to-severe disease not responding to other treatments | Monoclonal antibodies shown in studies to be safe and effective; dupilumab for ages 6+, tralokinumab for adults |
Therapies
Beyond medicines, four therapies play important roles:
Wet dressings. An intensive treatment for severe eczema: a corticosteroid ointment is applied, then sealed with wet gauze topped with dry gauze. It is sometimes done in a hospital because it is labor-intensive, but you can ask your provider about learning the technique for safe home use.
Light therapy (phototherapy). For people who don't improve with topical treatments or flare rapidly after treatment. The simplest form uses controlled amounts of natural sunlight; other forms use artificial UVA and narrowband UVB, alone or with drugs. Long-term use carries risks — premature skin aging, skin color changes, and a higher skin cancer risk — so it is used less in young children and not given to infants.
Counseling. If your skin condition leaves you embarrassed or frustrated, talking with a therapist or counselor can help.
Relaxation, behavior modification, and biofeedback. These approaches can help people who scratch out of habit.
Baby Eczema (Infantile Eczema)
In babies, treatment includes identifying and avoiding skin irritants, avoiding extreme temperatures, and giving a short bath in warm water followed by a cream or ointment while the skin is still damp. Using petroleum jelly on a baby's skin may also help prevent atopic dermatitis from developing.
If these steps don't improve the rash, or it looks infected, see your baby's provider. A prescription medicine may be needed to control the rash or treat infection. An oral antihistamine may be recommended to lessen the itch and cause helpful drowsiness for nighttime discomfort — though drowsy antihistamines may negatively affect school performance in some children.
Which lifestyle habits and home remedies help calm eczema?
Caring for sensitive skin with daily moisturizing, gentle bathing and not scratching is the first step in treating atopic dermatitis and preventing flares.
Moisturize at least twice a day. Use bath oils, creams, lotions, shea butter, ointments, or sprays — products free of dyes, alcohols, and fragrances. Ointments are greasier but may sting less. For a child, try an ointment before bedtime and a cream before school. Let moisturizer absorb before dressing.
Apply an anti-itch cream. A nonprescription cream with at least 1% hydrocortisone can temporarily relieve itch. Apply no more than twice a day to the affected area before moisturizing. Once improved, use it less often to prevent flares.
Consider oral allergy or anti-itch medicine. Options include nonprescription antihistamines such as cetirizine (Zyrtec Allergy) or fexofenadine (Allegra Allergy). Diphenhydramine (Benadryl) helps severe itch but causes drowsiness, making it better for bedtime.
Don't scratch. Press or pat the skin instead. Cover itchy areas, keep nails trimmed — and for children, trim nails and have them wear socks or gloves at night.
Take a daily bath or shower. Use warm (not hot) water. In a bath, sprinkle colloidal oatmeal (finely ground oatmeal made for bathing) into the water. Soak for less than 10 minutes, pat dry, and moisturize within three minutes.
Use a gentle, nonsoap cleanser. Choose one without dyes, alcohols, or fragrances, and rinse it off completely.
Try a bleach bath (with your provider's approval) for severe or frequent flares. Add 1/2 cup of household bleach — not concentrated — to a 40-gallon tub of warm water, soak from the neck down (or just affected areas) for 5 to 10 minutes, keep your head above water, rinse off, and repeat 2 to 3 times a week. The diluted bleach decreases skin bacteria and related infections.
Use a humidifier. Hot, dry indoor air parches sensitive skin and worsens itching and flaking.
Wear cool, smooth-textured clothing. Avoid rough, tight, or scratchy fabrics, and harsh detergents and dryer-applied fabric softeners.
Treat stress and anxiety. Stress and emotional disorders can worsen atopic dermatitis, so caring for your emotional health helps your skin too.
How can eczema flares be prevented by avoiding triggers?
Preventing atopic dermatitis flares starts with knowing your personal triggers, since they vary widely from person to person. The general rule: avoid anything that causes an itch, because scratching often triggers a flare. Common triggers include:
Category | Triggers |
Fabrics and chemicals | Rough wool fabric; fragrances; other irritating chemicals; cleaning products |
Environment | Dry skin; cold and dry air; mold; pollen; dust mites and pet dander; smoke from tobacco |
Body and lifestyle | Heat and sweat; stress; skin infection |
Foods (infants and children) | Certain foods such as eggs and cow's milk may trigger flares — discuss identifying potential food allergies with your child's provider |
Once you understand what triggers your eczema, work with your healthcare provider on how to manage symptoms and prevent flares.
Which alternative medicine options may help eczema?
Some alternative treatments for eczema have clinical study support, including cannabinoid creams, natural bath oils, manuka honey and acupuncture or acupressure.
Cannabinoid creams. Applied to skin, these have been shown to ease itching and skin thickening, with several studies over more than 10 years showing some benefit.
Natural oils. Soybean oil and mineral oil added to bathwater might improve dry skin — but use caution, as oils make the tub slippery.
Manuka honey. Applied to skin, it calms reactions and has centuries of use as an antimicrobial. Never use it on children under 1 year because of infantile botulism risk.
Acupuncture and acupressure. Several studies show these can reduce itchiness.
If you're considering alternative therapies, talk with your healthcare provider about their pros and cons first.
How can people cope with atopic dermatitis and find support?
Atopic dermatitis can make you feel uncomfortable and self-conscious. It can be especially stressful, frustrating, or embarrassing for adolescents and young adults — disrupting sleep and even contributing to depression. Some people find it helpful to talk with a therapist or counselor, a family member, or a friend. Finding a support group of people who live with eczema can also help.
How should you prepare for an atopic dermatitis appointment?
You'll likely start with your primary care provider, or see a dermatologist (skin specialist) or allergist.
What You Can Do
List your symptoms — when they occurred and how long they lasted — plus factors that triggered or worsened them (soaps, detergents, tobacco smoke, sweating, long hot showers).
List all medications, vitamins, supplements, and herbs you take. Better yet, bring the original bottles with dosages and directions.
Write down questions to ask, such as: What might be causing my symptoms? Are tests needed to confirm the diagnosis? What treatment do you recommend? Is this condition temporary or chronic? Can I wait to see if the condition goes away on its own? What are the alternatives to the approach you're suggesting? What skin care routines do you recommend to improve my symptoms?
What to Expect From Your Doctor
Your provider is likely to ask questions such as:
What are your symptoms and when did they start?
Does anything seem to trigger your symptoms?
Do you or any family members have allergies or asthma?
Are you exposed to irritants from your job or hobbies?
Have you felt depressed or under unusual stress lately?
Do you come in direct contact with pets or other animals?
What products do you use on your skin (soaps, lotions, cosmetics)?
What household cleaning products do you use?
How much do your symptoms affect your quality of life, including sleep?
What treatments have you tried so far? Has anything helped?
How often do you shower or bathe?
Frequently Asked Questions
What is atopic dermatitis (eczema)?
Atopic dermatitis, commonly called eczema, is a chronic condition that causes dry, itchy, and inflamed skin. It often begins before age 5, most commonly appears where the skin flexes — inside the elbows, behind the knees, and in front of the neck — and tends to flare periodically. It is not contagious.
What causes eczema?
In some people, eczema is related to a gene variation that weakens the skin's barrier, making it less able to retain moisture and block bacteria, irritants, and allergens. In others, too much Staphylococcus aureus bacteria on the skin displaces helpful bacteria and disrupts the barrier. A weak barrier can also trigger an immune response that causes inflammation and itching.
What does an eczema rash look like?
Symptoms vary widely and can appear anywhere, but commonly include dry cracked skin, itchiness, a rash on swollen skin that varies in color by skin tone, small raised bumps on brown or Black skin, oozing and crusting, thickened skin, darkening around the eyes, and raw sensitive skin from scratching.
What are the most common eczema triggers?
Common triggers include rough wool, dry skin, heat and sweat, stress, dust mites and pet dander, mold, pollen, tobacco smoke, cold dry air, fragrances, and cleaning products. In infants and children, eating certain foods such as eggs or cow's milk may trigger flares.
How do you treat atopic dermatitis?
Treatment starts with regular moisturizing and gentle skin care — moisturizing twice a day, short warm baths, gentle nonsoap cleansers, and avoiding triggers. If needed, options include nonprescription 1% hydrocortisone anti-itch cream, prescription topical creams, antihistamines, antibiotics for infections, pills for severe inflammation, wet dressings, light therapy, and injectable biologics such as dupilumab or tralokinumab for cases that don't respond to other treatments.
Is eczema curable, or will it come back?
Atopic dermatitis is chronic, so symptoms may return in flares even after successful treatment. Many people need to try different treatments over months or years to find what controls it. Consistent daily skin care habits are the foundation of long-term control.
When should I seek urgent care for eczema?
Seek immediate medical attention if you or your child has a fever and the rash looks infected — with signs such as new streaks, pus, or yellow scabs. Skin infections from repeated scratching can spread and, in rare cases, become life-threatening.
Conclusion
Atopic dermatitis is a chronic condition, but it is a controllable one — and this guide gives you everything needed to take control. The three lessons to keep:
The skin barrier is the battlefield. Whether the cause is a gene variation, excess Staphylococcus aureus, or an immune response, the result is a weakened skin wall — so every habit that strengthens and moisturizes it matters.
Consistency beats intensity. Moisturizing twice daily, short warm baths, gentle cleansers, and the three-minute moisturizing window do more than any single medication to prevent flares.
Know your triggers and escalate when needed. Identify what sparks your flares, use 1% hydrocortisone early, and move up the treatment ladder — prescription creams, wet dressings, light therapy, or biologics — with your provider when self-care isn't enough.
From the first sign of itch to advanced biologic treatments, this guide walks the full path of living well with eczema. If you or a family member lives with related conditions, explore our asthma complete guide — people with atopic dermatitis are at higher risk of asthma and hay fever, and understanding both conditions together is powerful.
Disclaimer: This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
References
Mayo Clinic. Atopic dermatitis (eczema) — Symptoms & causes. Accessed October 12, 2026. https://www.mayoclinic.org/diseases-conditions/atopic-dermatitis-eczema/symptoms-causes/syc-20353273
Mayo Clinic. Atopic dermatitis (eczema) — Diagnosis & treatment. Accessed October 12, 2026. https://www.mayoclinic.org/diseases-conditions/atopic-dermatitis-eczema/diagnosis-treatment/drc-20353279
Kelleher MM, Phillips R, Brown SJ, et al. Skin care interventions in infants for preventing eczema and food allergy. Cochrane Database Syst Rev. 2022;11(11):CD013534. PMID 36373988. https://doi.org/10.1002/14651858.CD013534.pub3
Drucker AM, Lam M, Elsawi R, et al. Comparing binary efficacy outcomes for systemic immunomodulatory treatments for atopic dermatitis in a living systematic review and network meta-analysis. Br J Dermatol. 2024;190(2):184-190. PMID 37831594. https://doi.org/10.1093/bjd/ljad393
Zhao H, Luo Y, Li W, et al. Association between antibiotic exposure and childhood atopic dermatitis: a systematic review and meta-analysis. EClinicalMedicine. 2025;84:103296. PMID 40547440. https://doi.org/10.1016/j.eclinm.2025.103296
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