Atopic Dermatitis and Eczema
What is Atopic Dermatitis and Eczema?
Atopic dermatitis is a chronic skin condition that causes red, itchy, and inflamed patches of skin. It is the most common form of eczema, affecting about 1 in 10 Americans. The word atopic refers to a tendency to develop allergic conditions like asthma and hay fever.
This condition happens when your skin barrier does not work properly. A healthy skin barrier keeps moisture in and irritants out. When this barrier breaks down, your skin loses water and becomes vulnerable to allergens, bacteria, and environmental triggers. This creates a cycle of inflammation, itching, and scratching that can affect sleep and quality of life.
Atopic dermatitis often begins in childhood but can start at any age. The condition tends to flare up periodically and then improve for a while. Research shows that omega-6 fatty acid imbalances play a key role in skin barrier function and inflammation. Understanding your body chemistry through blood testing can help identify root causes and guide treatment.
Symptoms
- Red or brownish-gray patches on the skin
- Intense itching, especially at night
- Dry, cracked, or scaly skin
- Small raised bumps that may leak fluid when scratched
- Thickened, leathery skin from repeated scratching
- Raw, sensitive, or swollen skin from scratching
- Common locations include hands, feet, ankles, wrists, neck, upper chest, eyelids, and inside elbows and knees
Symptoms can vary widely from person to person. Some people experience only mild dryness and occasional itching. Others deal with severe, constant symptoms that disrupt daily activities and sleep. Flares can be triggered by stress, weather changes, irritants, or allergens.
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Causes and risk factors
Atopic dermatitis results from a combination of genetic factors, immune system responses, and environmental triggers. People with this condition often have a gene variation that affects the skin barrier protein filaggrin. This makes the skin less able to retain moisture and protect against irritants. Family history of eczema, asthma, or allergies increases risk significantly.
Research shows that omega-6 fatty acid metabolism plays a direct role in skin health. Imbalances in gamma-linolenic acid and arachidonic acid affect skin barrier function and drive inflammatory responses. Other triggers include harsh soaps, detergents, fragrances, certain fabrics, sweat, stress, cold or dry weather, and food allergens. Understanding these root causes through testing helps create targeted treatment plans.
How it's diagnosed
Doctors diagnose atopic dermatitis by examining your skin and asking about your symptoms and medical history. There is no single test for eczema itself. However, blood tests can identify underlying imbalances that contribute to skin inflammation and barrier dysfunction.
Testing omega-6 fatty acid levels helps reveal metabolic factors affecting your skin health. Rite Aid offers omega-6 fatty acid testing as an add-on to our preventive health panel at Quest Diagnostics locations nationwide. This testing provides insight into inflammatory pathways that drive atopic dermatitis. Your doctor may also recommend allergy testing or skin patch tests to identify specific triggers.
Treatment options
- Moisturize skin at least twice daily with thick creams or ointments
- Take short, lukewarm baths or showers using gentle, fragrance-free cleansers
- Apply prescription topical corticosteroids or calcineurin inhibitors during flares
- Use wet wrap therapy for severe flares
- Take antihistamines to reduce nighttime itching
- Consider omega-6 and omega-3 fatty acid supplementation after testing
- Identify and avoid personal triggers like certain foods, fabrics, or stress
- Manage stress through meditation, exercise, or therapy
- Use a humidifier in dry environments
- Try phototherapy or systemic medications for severe cases
Need testing for Atopic Dermatitis and Eczema? Add it to your panel.
- Simple blood draw at your nearest lab
- Results in days, not weeks
- Share results with your doctor
Frequently asked questions
Eczema is an umbrella term for several conditions that cause inflamed, itchy skin. Atopic dermatitis is the most common and severe form of eczema. The terms are often used interchangeably, though technically atopic dermatitis is one specific type of eczema.
Blood tests cannot diagnose atopic dermatitis directly, but they can identify underlying factors that contribute to the condition. Testing omega-6 fatty acid levels reveals metabolic imbalances that affect skin barrier function and inflammation. This information helps guide treatment and identify root causes.
No, atopic dermatitis is not contagious. You cannot catch it from or spread it to another person. The condition results from genetics, immune system function, and environmental factors, not from infection.
Common triggers include dry skin, irritants like harsh soaps or detergents, allergens such as pollen or pet dander, stress, sweat, and temperature changes. Food allergies can trigger flares in some people, especially young children. Identifying your personal triggers through careful observation helps prevent flares.
Research shows that omega-6 fatty acid imbalances directly affect skin barrier function in atopic dermatitis. Testing can reveal whether you have deficiencies or imbalances. Some studies suggest that supplementing with gamma-linolenic acid, a specific omega-6, may help reduce inflammation and improve skin symptoms when used alongside standard treatment.
Many children see their symptoms improve or disappear as they get older. About half of children with atopic dermatitis outgrow it by their teenage years. However, some people continue to have symptoms into adulthood, and others develop the condition for the first time as adults.
You should moisturize at least twice daily, and more often if your skin feels dry. Apply moisturizer within three minutes after bathing to lock in moisture. Use thick creams or ointments rather than lotions, as they provide better hydration and skin barrier protection.
Food allergies can trigger eczema flares in some people, especially children. Common culprits include milk, eggs, peanuts, tree nuts, soy, wheat, fish, and shellfish. However, food triggers vary by person. Work with your doctor or an allergist to identify if specific foods affect your symptoms before removing them from your diet.
Yes, stress is a known trigger for atopic dermatitis flares. Emotional stress affects your immune system and can increase inflammation throughout your body, including your skin. Managing stress through relaxation techniques, exercise, adequate sleep, and therapy can help reduce flare frequency and severity.
See a doctor if over-the-counter treatments are not working, if the itching keeps you awake at night, if you develop signs of infection like increased pain or pus, or if the rash covers large areas of your body. A healthcare provider can prescribe stronger medications and help identify underlying causes through testing.