Also known as: Atopic Dermatitis
Eczema is a chronic skin condition causing inflamed, itchy, red, and cracked skin.
Eczema, medically known as atopic dermatitis, is the most common form of dermatitis affecting an estimated 31.6 million people in the United States alone. It is a chronic, relapsing inflammatory skin condition characterized by intense itching, dry skin, and recurrent rashes that can appear anywhere on the body. Eczema is part of the atopic triad, which includes asthma and allergic rhinitis (hay fever), and individuals with eczema are at higher risk of developing these related allergic conditions. The condition typically begins in infancy or early childhood, with approximately 60% of cases appearing within the first year of life.
The underlying cause of eczema involves a complex interplay between genetic predisposition, immune system dysfunction, and environmental factors. A key genetic factor is mutations in the filaggrin gene, which produces a protein essential for maintaining the skin's protective barrier. When this barrier is compromised, the skin loses moisture more easily and becomes more permeable to irritants, allergens, and microorganisms. This triggers an overactive immune response, leading to the characteristic inflammation, redness, and itching. Environmental triggers such as harsh soaps, fragrances, wool clothing, temperature extremes, stress, and certain foods can provoke or worsen flare-ups.
While eczema cannot currently be cured, it can be effectively managed with a comprehensive treatment approach. Many children with eczema experience improvement or complete resolution of symptoms by adolescence, although some continue to have flares into adulthood. In adults, eczema tends to be more persistent and may require ongoing management. The chronic nature of the disease, combined with its visible manifestations and relentless itching, can significantly impact quality of life, sleep, self-esteem, and mental health. A multifaceted approach combining skin care, trigger avoidance, and appropriate medical treatment is essential for controlling symptoms.
People with Eczema often experience the following symptoms.
The hallmark of eczema is persistent, often severe itching that can be debilitating. The itch frequently precedes the visible rash and tends to worsen at night, disrupting sleep. Scratching provides temporary relief but damages the skin further, creating a vicious itch-scratch cycle that perpetuates the condition.
The skin in eczema-prone areas is characteristically dry, rough, and easily irritated. This results from impaired skin barrier function, which allows excessive water loss from the epidermis. The dryness affects the entire body, not just areas with active rashes.
Inflamed patches of skin appear red on lighter skin tones and may appear darker brown, gray, or purple on deeper skin tones. In infants, patches commonly appear on the face, scalp, and extensor surfaces. In older children and adults, the flexural areas (inner elbows, behind knees, neck) are typically affected.
During acute flare-ups, small fluid-filled vesicles may develop and burst, producing a weeping, oozing surface. As the fluid dries, it forms yellowish crusts over the affected areas. This oozing phase is particularly common in infantile eczema and can indicate secondary bacterial infection.
Chronic scratching and rubbing cause the skin to become thickened, leathery, and darkened — a process called lichenification. This is most common in areas subjected to repeated mechanical trauma and is a sign of long-standing, poorly controlled eczema.
Severely dry and inflamed skin can crack and develop painful fissures, particularly on the hands, fingers, and feet. These breaks in the skin are not only painful but also provide entry points for bacteria, increasing the risk of secondary infections.
Active eczema patches may appear swollen, warm to the touch, and clearly inflamed. The inflammation represents the underlying immune response and correlates with the severity of the flare-up.
The relentless nighttime itching frequently disrupts sleep quality and duration, leading to daytime fatigue, irritability, difficulty concentrating, and reduced quality of life for both patients and family members.
Certain factors may increase your likelihood of developing Eczema.
Common approaches to managing eczema. Always consult a healthcare provider for personalized treatment.
Regular and liberal application of emollients is the foundation of eczema management. Thick creams and ointments (such as petroleum jelly, ceramide-based creams, or colloidal oatmeal preparations) should be applied at least twice daily and immediately after bathing to lock in moisture. This restores the skin barrier, reduces dryness, and decreases the need for topical steroids.
Topical corticosteroids remain the first-line anti-inflammatory treatment for eczema flares. They are available in varying potencies, from mild (hydrocortisone 1%) for sensitive areas to potent formulations for thicker skin. They are applied to active lesions for short courses (typically 1-2 weeks) to control inflammation and itching.
Tacrolimus ointment and pimecrolimus cream are steroid-free anti-inflammatory medications particularly useful for sensitive areas such as the face, eyelids, and skin folds. They are effective for both acute flares and long-term maintenance therapy without the skin-thinning side effects associated with corticosteroids.
For moderate-to-severe eczema that does not respond to topical treatments, injectable biologic medications such as dupilumab (Dupixent) have revolutionized treatment. Dupilumab targets interleukin-4 and interleukin-13, key drivers of atopic inflammation. Newer biologics and JAK inhibitors (such as abrocitinib and upadacitinib) offer additional systemic treatment options.
For severe flares, wet wrap therapy involves applying moisturizer or topical medication, covering the area with a damp layer of bandage or clothing, and then adding a dry layer on top. This technique enhances medication absorption, cools the skin, and provides a physical barrier against scratching.
Identifying and avoiding individual triggers is crucial for long-term management. Common triggers include specific detergents, fragrances, wool or synthetic fabrics, certain foods, dust mites, pet dander, temperature extremes, low humidity, stress, and sweat. Keeping a symptom diary can help identify personal triggers.
Eczema is diagnosed primarily through clinical examination and medical history, as there is no single definitive test. Physicians look for characteristic features including the pattern and distribution of the rash, the chronic relapsing nature, personal or family history of atopic conditions (eczema, asthma, hay fever), and the presence of intense itching. Diagnostic criteria such as the Hanifin and Rajka criteria are commonly used. In adults, the condition typically affects the flexural areas, face, neck, and hands. Skin prick testing or specific IgE blood tests may be performed to identify relevant allergens that could be triggering flares. Patch testing can help identify contact allergens in patients with suspected allergic contact dermatitis overlap. Skin biopsy is rarely needed but may be performed to exclude other conditions such as psoriasis, cutaneous T-cell lymphoma, or other dermatoses when the presentation is atypical.
See a doctor if eczema is severe enough to disrupt sleep or daily activities, if you notice signs of skin infection (increased redness, warmth, pus, or fever), if home treatments are not providing relief, or if the rash appears suddenly and spreads rapidly.
Steps that may help reduce the risk of developing or worsening eczema.
Maintain a consistent daily moisturizing routine using fragrance-free emollients, applying generously after bathing while skin is still damp
Use gentle, fragrance-free, dye-free soaps and detergents for bathing and laundry to minimize skin irritation
Keep indoor environments at moderate temperature and humidity levels, and use a humidifier during dry winter months
Wear soft, breathable fabrics such as cotton and avoid direct contact with wool, rough textiles, and synthetic materials
Manage stress through relaxation techniques, regular exercise, and adequate sleep, as stress is a well-documented eczema trigger
If left untreated or poorly managed, eczema may lead to:
No, eczema is not contagious. You cannot catch eczema from another person or spread it through physical contact. Eczema is caused by a combination of genetic factors affecting the skin barrier, immune system dysfunction, and environmental triggers. However, the broken skin in eczema can become infected with bacteria or viruses, and these secondary infections may be contagious.
Currently, there is no permanent cure for eczema. However, the condition can be well managed with proper treatment and skin care. Many children outgrow eczema or experience significant improvement by adolescence — about 60-70% of children see their symptoms resolve or greatly improve. For those who continue to have eczema in adulthood, advances in treatment, particularly biologic medications, have dramatically improved outcomes.
Food triggers vary between individuals, and not all eczema patients have food-related triggers. The most common food allergens associated with eczema flares in children include cow's milk, eggs, peanuts, tree nuts, wheat, soy, and fish. In adults, food triggers are less common. It is important not to eliminate foods without proper allergy testing, as unnecessary dietary restrictions can lead to nutritional deficiencies. Consult an allergist for proper evaluation.
Take lukewarm (not hot) baths or showers lasting 5-10 minutes. Use mild, fragrance-free cleansers and avoid scrubbing the skin. Pat the skin gently with a soft towel (do not rub), and immediately apply a thick moisturizer within 3 minutes of bathing while the skin is still slightly damp. This 'soak and seal' technique is one of the most effective strategies for maintaining skin hydration and barrier function.
This information is for educational 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.