Medical Dermatology · Eczema Treatment

Eczema: Why the Itch-Scratch Cycle Is the Real Problem, Not Just Dry Skin

Eczema isn't one condition — it's a family of related ones, each with a different trigger and treatment path. Here's what's actually happening to your skin barrier, and how to break the cycle.

Reviewed by Dr. Sam Abaza. Diplomate, American Board of Physician Specialties

7 min read · 8 scientific references

31.6 million

Americans have some form of eczema. National Eczema Association.

10–20%

of children worldwide are affected by atopic dermatitis, the most common type. American Academy of Dermatology.

60%

of atopic dermatitis cases begin before age 1; nearly 90% before age 5. National Eczema Association.

1 in 3

adults with eczema report it disrupts sleep most nights due to itching. Clinical study, JAAD.

WHAT IS ECZEMA

What Is Eczema?

Eczema is an umbrella term for a group of conditions that cause the skin to become inflamed, itchy, and irritated. The most common form, atopic dermatitis, happens when the skin's outer barrier doesn't hold in moisture or keep out irritants the way it should. That weakened barrier lets in allergens and bacteria, triggers an immune response, and creates the itch-scratch cycle that defines eczema: itching leads to scratching, scratching damages the skin further, and further damage makes the itching worse. Breaking that cycle, not just moisturizing, is the actual goal of treatment.

What Causes an Eczema Flare?

Eczema flares come from a combination of a genetically weaker skin barrier and outside triggers. Roughly half of people with moderate to severe atopic dermatitis carry a mutation in the filaggrin gene, which normally helps the skin retain moisture. On top of that genetic foundation, flares are commonly triggered by dry air and cold weather, harsh soaps or fragranced products, wool or synthetic fabrics, sweat, stress, and known allergens like dust mites or pet dander. Many patients also have a personal or family history of asthma or seasonal allergies — a pattern doctors call the "atopic march."

Types of Eczema at a Glance

Who is most at risk

Family History of Atopy

A personal or family history of eczema, asthma, or seasonal allergies significantly raises risk — these conditions often run together.

Infants and Young Children

Nearly 90% of atopic dermatitis cases begin before age 5, often improving with age but sometimes persisting into adulthood.

Dry or Cold Climates

Low humidity strips moisture from the skin barrier faster than it can be replenished, making flares more frequent in winter months.

Frequent Hand-Washing or Wet Work

Healthcare workers, food service staff, and parents of young children face elevated risk of hand eczema from repeated water and soap exposure.

High Stress Levels

Stress doesn't cause eczema, but it's a well-documented flare trigger, likely through its effects on immune and inflammatory pathways.

Known Environmental Allergies

Dust mites, pet dander, and pollen can trigger or worsen flares in people whose eczema has an allergic component.

When you should schedule a visit

Itching or rash that disrupts sleep or daily activities on a regular basis.
Skin that's cracking, weeping, or showing signs of infection (increased redness, warmth, pus, or fever).
A rash that isn't improving after a few weeks of over-the-counter moisturizer and gentle skincare.
Eczema alongside asthma or seasonal allergy symptoms that haven't been evaluated together.
Any flare severe enough to affect a child's growth, sleep, or behavior.
Uncertainty about whether a rash is eczema, contact dermatitis, or another condition — an exam settles it quickly.

How Is Eczema Actually Treated?

Treatment starts with rebuilding the skin barrier and removing triggers, then escalates based on severity. Daily moisturizing with a fragrance-free emollient is the foundation for every patient, regardless of severity — it's not optional, it's the base layer everything else builds on. Topical corticosteroids or topical calcineurin inhibitors are used for active flares to calm inflammation quickly. For moderate to severe cases that don't respond to topicals, phototherapy or systemic treatments, including newer biologic medications targeting specific immune pathways, can bring lasting control. Identifying and avoiding personal triggers, whether that's a specific fabric, soap, or allergen, is treated as seriously as any medication, since trigger avoidance often reduces how often flares happen in the first place.

Common Questions About Eczema

Is eczema contagious? No. Eczema is not an infection and cannot be spread through contact with someone who has it. It's related to genetics, immune response, and skin barrier function.

Will my child outgrow their eczema? Many children see significant improvement or full resolution by adolescence, though some carry a milder form into adulthood. Even when eczema persists, most patients see it become more manageable over time with consistent skincare and trigger avoidance.

Is eczema the same as psoriasis? No. Both cause red, irritated skin, but eczema is tied to skin barrier dysfunction and tends to be itchier with less defined edges, while psoriasis is autoimmune with a distinctive silvery scale and clearer plaque borders. An in-person exam is the reliable way to tell them apart.

Can diet trigger eczema flares? In some patients, particularly children with more severe atopic dermatitis, certain foods can worsen symptoms. Food triggers are individual, not universal, so identifying them usually requires guided elimination or allergy testing rather than broadly cutting foods on your own.

What's the difference between a moisturizer and an emollient for eczema? In practice the terms are often used interchangeably, but for eczema specifically, look for a fragrance-free, thick emollient (ointment or cream rather than lotion) applied immediately after bathing to lock in moisture while the skin is still damp.

Can eczema lead to skin infections? Yes. Broken, cracked skin from scratching is more vulnerable to bacterial infection, most commonly from staph bacteria. Increased redness, warmth, pus, or fever alongside a flare warrants prompt evaluation.

Sources cited on this page

National Eczema Association. Eczema stats and facts.
American Academy of Dermatology. Atopic dermatitis: overview and epidemiology.
Weidinger S, Novak N. Atopic dermatitis. The Lancet. Clinical review.
National Institute of Allergy and Infectious Diseases. Filaggrin mutations and atopic dermatitis.
Clinical study on sleep disruption in atopic dermatitis patients. Journal of the American Academy of Dermatology.
American Academy of Dermatology. Eczema types: atopic, contact, dyshidrotic, and nummular.
American Academy of Dermatology. Eczema treatment guidelines and biologics.
Mayo Clinic. Atopic dermatitis (eczema): symptoms, causes, and treatment.

This page is for general educational purposes and does not replace an in-person medical evaluation. Diagnosis and treatment recommendations depend on an in-person exam and your specific history. Schedule a consultation with Dr. Abaza to discuss your specific concern.

BOTTOM LINE

Breaking the Cycle, Not Just Treating the Symptom

Eczema is a manageable condition once the underlying barrier issue and personal triggers are identified. Dr. Abaza treats eczema patients of all ages at both our Diamond Bar and Harbor locations, building a treatment plan around what's actually driving your flares.